They will physically bolt on, but the offset is different. Also, 16" drag radials are more scarce/expensive than the more common 15". Ask him if you can sell them and use the money to buy some 15" Racestars or something similar.
Yeh I knew the offset would be different, I guess I was asking if it would be wide enough to be beneficial. The max I could probably run on them would be like 255s, right? If I can't use them I was gonna sell them or put them on my wife's car.
I think you're better off going with something different. I mean the 275 outlaw cars are going retarded fast on a 275, so in theory a 255 should be plenty, but a 275/50-15 just looks tough on the back of a S197.
I ran my old pony wheels off my v6 on my 06 GT. I ran MT 26x11.5x16 on the pony wheels. I never ran into a problem like rubbing or anything. I even had larger sway bar on the rear and LCAs and antisquats by CHE.