WOW. This shouldn't be this hard, but it is. Damn. I'm not familiar with your intake but from what I can see, I like it except for the missing bolt pattern for the Holley. I didn't even know Chrysler had intakes with the missing bolt pattern.
I think if you get the bolts correct and it seals, you'll be on the road to getting it tuned up.
I didn't realize it was going to be this much of a big deal or I'd have said screw it and find a Carter/Edelbrock for it like mattax said.
I think once you get the vacuum leak sealed it will get much easier. At least I hope that.