Splayed main caps on a 360?

Heres my rough build.

360 block bored 30 over.
408 forged crank and H beam rods.
Custom forged pistons.
8 to 1 compression.
Double key way.
Speed master heads.
ARP studs and bolts.
6-71 roots blower at 7 Lbs.

Billet 4 bolt main caps?
Girdle?

What am i missing or how would you build it?