Help on 408 build

Off course changing the pistons or putting thick gaskets technology does the same thing...the difference is head shims or really thick gaskets are prone to leakage issues, especially on an engine that we have no idea on if the deck surfaces are decent. Does that sum it up For you Mr B3
And if the kid needs help putting together correct I will make sure that he gets good help local....just like I got his head CCed for him even though I didn’t even know him.
I don't know him either, but I did give him advice based on his inquiry, not what I think is the perfect solution, but I thought he wanted to drive his car. If you can't get a Cometic gasket to seal, by all means, don't use them.

Every engine builder has his own preferences and methods, but the engineering math does not change. The same applies to rocker geometry, and there are a whole lot of people who get that wrong, because they took advice from the wrong sources, without applying the math and pure simple logic.

Take good care of him. We need more young people in the Mopar hobby.

So I came across guy that posted a for sale ad in my city selling brand new pistons in box for 500$ cnd

Wiseco Pro Tru dished stroker pistons

4.030 bore -20cc dish PT036H3

9.8:1 cr with 65cc

9.5:1 cr with 68cc

These won't give you any quench unless you buy aftermarket heads to go with them, so you still won't please everyone giving advice here. Whatever you decide, best of luck to you. I hope you get the results you are looking for without breaking the bank.