I want to badge a First Gen Firebird, "Firebird GTP"

[Slick2500]

Wouldn't you need to use a RWD block for this? Planning electric fans or clutch fan? Why would the air intake go through the firewall? What trans are you using? Can you use X body engine mounts and accessories on an L67 or were you planning to fab mounts and keep the serpentine belts? A/C or no? Those are questions that come to mind when I consider what mechanical issues might arise.

What do you mean rwd block? Like the old 3.8 that came in the old 70-80s buicks? Or the 3.8 that was in the 4th gen fbodys?

[idrivejunk]

Or the 3.8 that was in the 4th gen fbodys?

4th gen. I did question whether X-body (such as 75-9 Skylark) mounts and accessory drive would swap to an L67 because I don't know. I am a Pontiac V8 man more than a 3800 freak.

The OP is ignoring me so I'm out. Put aluminum heads on a 455 with a nice cam, paint the whole thing blue, done. Leave 326 emblems on it and lie, the engines look the same from up top. Building a 500 HP 326 would cost more and make less sense than any of the options mentioned so far. Pass the LS bong to the next guy.

[molsenice]

4th gen. I did question whether X-body (such as 75-9 Skylark) mounts and accessory drive would swap to an L67 because I don't know. I am a Pontiac V8 man more than a 3800 freak.

The OP is ignoring me so I'm out. Put aluminum heads on a 455 with a nice cam, paint the whole thing blue, done. Leave 326 emblems on it and lie, the engines look the same from up top. Building a 500 HP 326 would cost more and make less sense than any of the options mentioned so far. Pass the LS bong to the next guy.

I gotcha and appreciate the advice. When I get around to this I'll put some pics up and let you all know what I did. Thank you!