There is someone with a Olds 455 in his Fiero, but he had to remove the trunk.
Yes, sort of, The clutch is different.
YES! You can put ANY small block Chevy into a Fiero. Visit here, http://www.v8archie.com/, there you can find the conversion kit (minus the engine) and answers to all of your questions.
yes, its not a question of what will fit...its a question of how much money you want to spend.
NO
2.8 out of a Chevrolet s 10 2.8 fit a 1986 Pontiac fiero
Yes, a 3.1 will fit in the Fiero. They are the same block.
There's a kit for that. Check the internet for fiero clubs and ask around.
no
If you mean 1988 and they are both notchies, yes they will.
biggest engine to fit is a 1.8 k series engine,no body modifications needed.
No, Fiero seats are pretty special to fit in where they are. I recomend you repair your old with parts from the fiero store.
Yes. It should fit it well.