Hey Guys quick question, I think I got screwed on this 350 tbi I wanted and asked for a 305 replace the original that spun a bearing in my 91 Firebird.
Anyway the guy sold me a 350 tbi from a 95 GMC 1500. ( my slip up didn't check engine ) I was told i could swap the exhaust manifolds from the 305 to the 350 or buy a pair from a 91 350 with no problem.
As of now I'm at a standstill trying to find a set of manifolds to fit both the replacment 350 to the 305 exhaust.
Any advice?

Should bolt right up. Only problem might be, the outlet of the 350 manifolds might be too big to fit to the 305 exhaust, since that's basically a coffee stirrer. The 350 manifolds are almost approaching drinking straw size, so ... yeah.

The 305 manifolds will bolt to the 350's heads and strangel it even worse than they did the 305, but they'll "fit".

What's the problem? Photos might help.

Use your car specific manifolds the ones that came off the 305. Bolts right up no problem. Strangle it? Yes absolutely...But its been done 10000000 times the 350 is a direct swap.. And another thing...Id take that 350 over the 305 any day.