What crate engines is everyone using??

What crate engines is everyone using??

I bought my current '69 Dart project a few years ago and it came with a new, never-run 380-horse 360 Mopar crate motor the PO had purchased before tiring of the project. It's still never been fired but I'm planning to pull it out and go through it just to make sure all is right.
Still contemplating changing a few things:
* aftermarket heads to replace the Magnum heads
* Edelbrock dual-plane intake to replace the single-plane M1
* haven't decided if I want to replace the 770-cfm Holley Street Avenger yet