Thank you for your response. Looks like the correct M90 generation is 5, 04-07 Grand Prix. I accidentally ordered Gen 3, but luckily was able to cancel it at the last moment :D
Did you tig weld the 2 wrong holes? I am thinking of just filling them with JB Weld temporarily so I don't invest...
@frosty_the_punk This is one bad *** build! You gave me a lot of ideas! What year/generation Gran Prix is the snout from? And do you know if it is interchangeable with other years? Also, what did you do to be able to fit the 4-bolt Edelbrock pulleys? I normally see 6-bolt pulleys on Eatons.
From the info I found on this forum, Summit Racing 9040 (or 9140 for shiny option) fit well with a magnum. Also 680144 exhaust kit should work very well, just need to trim the pipes in the right places by about 3 inches.
Hoping to do this swap over the winter
Use search here or google to find...