i have just bought a we-4 car and was wondering if it is anymore valuable then a regular gn or t type. i have looked up what i could and i have seen a few facts on the car but not alot. here is what i know, #1 there were 26,555 grand nationals made in 1987, and only 1547 we-4 EVER produced. #2 i also know that they are the only car buick called the TURBO"T". i know there were t types and the "T", but only the we-4 was the turbo "T". what else is there to know about these cars? are they more valuable.