This is a stock motor in these cars. Notice no turbo...

This will be replacing the original motor hopefully soon in the left one...

Hey Bowtie, got a favor to ask you,since you work for GM.These cars were produced at the Doraville assembly plant in 1986. I have about 28 of the cars VIN numbers,but would kill to be able to find out the remainding cars vins so I can authenticate the remainder of the GS cars.Is there any way to get ahold of the daily car reports or vin list from Doraville Plant? Its a reach,but I want to try every avenue to get more info on these rare cars. I am trying to determine the time frame these were built in and so far its between 3/14/86 and 6/17/86. Any way you can find the Vin numbers?
My website for these cars is currently being built at
http://1986buickcenturygransport.freehosting.net/As soon as I get some more info,I plan to eliminate the popups.