I know about the GM Brass Hat cars, and the Zone cars, but have never seen a 70 GS Brass Hat mentioned before...hard to say if this thing is cobbled together or what. https://www.raleighclassic.com/vehicles/1012/1970-buick-gran-sport
It has been for sale for awhile now: https://v8buick.com/index.php?threads/1970-gs-stage1-convertible.371926/ https://www.v8buick.com/index.php?threads/1970-stage-1-convertible-auction.352393/
Car was ordered by a gm exec very highly optioned car never titled while the wife drove then sold to Ken Anderson who had it for yrs and finally sold it
GM offered the rear window defogger (blower motor and ductwork under the rear seat top) for convertibles for 70-72, but I don’t remember if the Buick’s had them for all 3 years. The 70 set-up is different then the 71-72 set-up due to the changes with the sheet metal under the rear seat top. Duane
I owned a 1972 Stage I convertible that had a factory rear defogger, so it was defiantly available that year. Larry.
Rear window defogger, option M7 GS production numbers. (and available combination totals) 1970 = 76 convertibles 8 of those with cruise control 48 had full length console / bucket seats 1971 = 65 convertibles 39 had power windows 8 had cruise control 8 had power windows and cruise control 1972 = 56 convertibles 10 with Turbo 400 trans 43 with Turbo 350 3 standard shift 32 had heavy duty cooling 36 had power windows 5 had power windows and cruise control Not available in 68/69
