i would say the normal body and inter. stuff. as dave said, the part's are getting really rare. and people know what they have when there selling the part's that you need. and seeing that it is a turbo car i would see if they have tried to hide any oil leak's. and if it was ever a northern car run threw it and double check for any rust any where. and try to look up underneith the plate that hold's the baterie. that's a common place on almost any car for the frame to get rusted. now unless if it was a cotton top that has it and was the origenal owner then you shouldnt have to much to worrie about but the chances of that is very slim.