I met the former mechanic and driver of this '66 GS dealer race car at the Vargo Dragway reunion last weekend. Vargo Dragway was in operation during the late 60's, it's located in Perkasie, Pa which is south of Quakertown and Allentown, Pa. Anyway, he had a few pics displayed of his former cars, one of which was this '66 GS. Here's the story: The convertible was chosen as it placed the car in a more desireable hp/weight class. It began as a run-of the-mill production car, but was upgraded with 4.30 gears, and the (original or replacement) engine received the 'race blueprint'.....bored out with 11:1 pistons. 'big' cam, Q-jet carb, etc. NHRA rated this engine at 332 hp, It ran low 13's with a trap speed of 100-105 mph. He did say this engine 'package' was not available to the general public, and it was only offered to certain dealers for race use. C&G received one, and also a dealer near Cecil County, Maryland. Could this be the 'MS' code 400/401 with 11:1cr listed in certain '66 literature?? He said this was NOT the production 340 hp Q-jet-optioned (L76)400/401 with 10.25:1 cr offered to the general public....(my Q-jet car has a 'MU' coded 400/401). Which brings up the question of why was the 'production' Q-jet 400/401 with 10.25:1 cr rated at 340hp, and the 'race' version with 11:1 cr rated at only 332hp??? ....maybe it was the difference between the Buick 'advertising team' ratings vs the NHRA ratings??? Dennis Manner was qouted as saying the Q-jet optioned 401 was rated at 332 hp at in last years feature on Jim Shiels' 'pilot' L76 '66 GS....maybe he was referring to this 'race' combo? A '66 Hot Rod article, 'Blueprinting Buicks for Action' documents mods performed for a race setup, with similar et/mph results. At the end of the racing season, the car was returned to stock, repainted, and sold by the dealer. Wonder where it is now???? Anybody out there come across a white '66 GS 'vert????? ....It might have a VERY interesting history!