What’s the best new high hp motor that will fit in a 72 Scamp?

Johnny Mac said
Thanks everyone for tagging me in!
We are rated a 4.7 out of 5 on Google I believe.
30 month warranty, every engine is dyno tested.
The new roller cam 408 is awesome!
Chrysler Compatible Crate Engines

Looks like the motor in the link uses aluminum Magnum style heads.
Are you guys using Edelbrocks heads for those motors?