I Need A Response Fast!!!

I NEED HELP!! i found a pontiac 350 with a pontiac turbo 350 tranny from a 70's model pontia. i planned on putting a 350 chevy into my s-10. with the pontiac 350 wrk???? HELP ME I NEED AN ANSWER BY 10AM TOMORROW!!!

Chevy 350 is a small block..Pontiac didn't make small/big blocks, BUT all of Pontiac's engines have about the same external dimensions as a Chevy big block.
So if it is a true Pontiac engine & trans..sure you can make it fit, but the "kits" for putting in a Chevy 350 won't be of any help.

Depends on the years, well not really, read on...

Modern day firebirds use chevy engines.

Older firebirds used their own engine, and it will bolt in.