Just wondering, I'm pulling the top of my motor apart trying to figure out what its problem is, and found a pair of rebuilt 3.1 heads on ebay, that are going real cheap. WIll the intake bolt up, or will it have problems?

It won't fit. The intake for the aluminum heads is completely different from the intake for the iron heads. You need to use the entire intake system from a 3.1 aluminum engine. And since the Fiero distributor won't fit if you use that intake system, you need to use the DIS from the 3.1 aluminum engine. And so you'll need to use the ECM and wiring from the 3.1 aluminum engine. And the pistons are different, so you'll need to use the pistons from the 3.1 aluminum engine. Finally, the alternator, AC, and dogbone brackets from the Fiero won't bolt to the aluminum heads as the bolt pattern is different.

Alright, thanks