400 motor parts

Not trying to be an ***....

But dude. It's clear from what you are saying on this thread that you really don't have much experience with Mopars. Everyone in here is telling you to give it a try and see what happens.

You're gonna tear that perfectly good engine apart without even trying it? It might be fast enough as is to scare you on the street.

You're gonna put a bunch of money in parts that might not even make the car faster. If it doesn't have the valvetrain, converter, gears, suspension etc to take advantage of the head flow. If you don't take all those things into consideration you could well spend a lot of money on new parts and not even feel faster by seat of pants. Worse yet it could be slower.

We all get the sentiment about it's gonna get upgraded anyway... but we've all seen so many cars taken apart for years chasing the perfect combo of parts.