Help me build my 360!

Magnum heads, aftermarket magnum replacements or closed chamber aftermarket performance heads are the way to go. You can run much higher compression and not have issues with detonation that you would with LA heads. I run 89 in my 10.6:1 magnum headed LA 360 and have used 87 in a pinch.

With the KB107's you will want to machine the block to get them zero to the deck. On my 360 it took about 0.020" to square and zero deck the KB107's.

I would use a modern fast ramp cam or a roller if you can afford it. I am running a Comp XE268H cam but some similar from the Lunati VooDoo line or Hughes will do the job. The XE268H is a great street cam pulls hard from 1500 rpm to 6000+, may not get you to the 12's but it will be awful close.

I performance dual plane intake like a Performer RPM, RPM Air Gap or a CrossWind will be ideal.