Greg Hessler 1970 A/S Boss 302
Peter H, Kyle Hallett, Wolfgang Kohrn -  July 2018

Pictures courtesy Ed Ludtke, Peter Hewitson and Kyle and Leon Hallett

Independent driver Greg Hessler bought this Boss in 1970 and immediately turned it with his father-in-law into an A/S racer
1970 Boss 302 SCCA A/S (A-Sedan) Mustang VIN 0F02G1XXXXXXX

(The following is a text excert from the 2010 ebay sales ad)

"Greg lived and worked in the Detroit area and had a connection to FORD Racing through his employment at Dearborn Steel & Tubing (DST) that did prototype work for Ford and Kar Kraft Engineering. 
Greg was also friends with Warren Tope who raced an ex-Kar-Kraft, Bud Moore prepared SCCA Trans-Am Mustang once driven successfully by factory FORD Team Driver George Follmer.

Above picture shows the car as raced in 1970 at the SCCA race at Michigan International Speedway in 1972.

"Car was prepared to FORD competition chassis manual/Stage III specifications by Greg and raced in AS races in the US and FIA International Events in Canada.  Documented period races from 1970-1972 are as follows:

  • AS races at Waterford Hills, Clakson, MI (Greg Hesler Driver)
  • AS races at Grattan Raceway, Grattan, MI (Greg Hesler Driver)
  • AS races at Road America, Elkhart Lake, WI (Greg Hesler Driver)
  • AS races at Michigan International Speedway, Irish Hills, MI (Greg Hessler/Bill New Drivers)
  • FIA GT Races at Harewood Acres, Ontario, Canada (Greg Hesler/John Kubiak Drivers)
    1970 1st place Harewood 2 hour Endurance Race
  • FIA GT Races at Mosport, Ontario, Canada (Greg Hesler/Rick Thompson Drivers)
    1971 1st place Mosport Sundowner (with John Kubiak)
  • 1972 June Sprints, Elkhart Lake, WI (Greg Hesler Driver)
  • 1972 ARRC Invitation, Road Altanta, Braselton, GA
    1972 1st in class M.I.S., 2,5hours (Greg Hessler/Rick Thompson)

The Boss 302 Mustang during testing at Waterford Hills

Driver Greg Hessler 1971

Sold in 1973 to S. L. Castiglione (never raced).  Sold in 1978 to Al Miertz (never raced).  Purchased in 1989 by John Vanprooyen and Mike Mulcahy. 

Restored to period correct/concours standards and Vintage Raced 1989-1991 by John VanProoyen and Mike Mulcahy. "

Sold to Peter H., on sale 2010 on ebay

Sold to Kyle and Leon Hallett in 2018

Historic races at :

  • Grand Bahama Vintage Grand Prix, Freeport, Lucaya Grand Bahama Island,
  • Mid-Ohio
  • Road America
  • St. Louis
  • Grattan
  • Sebring

Further documentation:
Issued SCCA Log Book Number 10-072 in 1972 to Hesler. 
1990 SVRA Historic Medallion.  Original Ray Whitfield Ford Factory Invoice.
Listed in the Boss 302 Registry.  Lois Eminger Paperwork.


  • Ford 9" differential 4:11 Gears/N-Case/Detroit Locker/DOZX Single Piston Floating calipers/Rotors/Axles/DOZX Wheel Studs and Caliper Brackets/Chassis Manual Track Bar/Koni Double Adjustable Shocks (all out of the FORD Competition Chassis Manual)  
  • Front Galaxie/T-Bird 4 Piston Calipers/DOZX Caliper Brackets/DOZX Coil Springs/Boss 429 Upper A-Arms/DOZX Modified Lower-Adjustable Ball Joint Lower A-Arms/Drum Brake Spindles/Koni Double Adjustable Shocks/DOZX Sway Bar
  • Engine:  Competition Prepared Boss 302/Accel Dual Point Distributor/Braswell Carburetor/Crower Rods/Ross Pistons/Ported & Polished Iron Heads/Crower Enduro Valve train/Stainless Valves/Hooker individual tube headers/Trans-Am Style Valve Covers/Bud Moore Mini-Plenum Intake
  • Trans:  Ford Top loader with Hurst Shifter
  • B&B Racing Seat (Period Correct original)
  • DOZX Style Competition Dash
  • Calypso Coral Urethane Exterior with Gloss Black Urethane underbody/Interior/Engine Bay/Front & Rear Boss Competition Spoilers/Headlights operational for night racing/Flared fenders to accommodate the 15X8 American Racing 200S Aluminum Wheels and Goodyear Blue Streak Tires
  • Engine Oil Cooler
  • Heavy Duty Racing Radiator
  • DOZX Style Roll Cage
  • Quick Fuel Fill in Rear Deck Lid
  • Rear mounted Battery
  • 22 Gallon Fuel Safe Fuel Cell

Kyle and Leon Hallett as the current owners added this information, which was written down by John Van Prooyen, when he met Greg.

  • It has Shelby Team / Bud Moore team door cards

  • KK narrow rear leaf springs (220lbs)

  • Shelby  / Bud Moore team fiberglass front bumper.

  • The Dash according to Greg is out of Warren Topes car.

  • Heads came off of Warren Topes car.

  • The radioator is a Corvette one apparently from a Pantera that Warren Tope owned.

  • The Bud Moore mini plenum has been lightened.

Below are 2 pictures of the car as raced in 2018

Greg Hessler at Waterford Hills 1970

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