PontiacBonnevilleClub.com

a buddy of mines has a 99 olds 88. and i was wondering if the front and back seat from that car fit in my 88 bonnie.
i was also wondering if the steel rims from said 88 fit on my bonne too

The seats are likely no. The wheels are a very likely yes.

I know the newer bonneville seats bolt right into the 87-91s, id be willing to assume that the olds mounting is the same too.