I'm running a small block, but
the last time I made a lot of changes I called Keith and asked him what I needed.
I told him my Cobra was a street car but I did not want to be embarrassed at the street light by a Corvette.
I wanted hp but I needed a motor that would let me cruise at low rpms.
I bought the heads and cam from him. Ordered a few other parts from Summit.
It's the best motor I've every owned. Cruise at low rpm without a trailer hitch jerk. 402 rear wheel hp and 416 tq. All most as fast as a big block.
I love it.
So I strongly recommend that you call Keith Craft and discuss what you want in a motor / Cobra.
The Custom Comp cam was cheaper from KC that any other source. The Brodix heads are bad to the bone.
Dwight