Recommended engine?

famous bob said
375, ain`t much !!

But equipped right, it can be a fun engine.

Retson said
What would be the best Mopar Crate to get then?

The best rep crate engine builder I have found is Carolina Machine.
Still, I would take the time to rebuild what I have or talk to the fellas mentioned above.
I beileve they can bud you a better bang engine for your buck.