318 build suggestions?

Who in their right mind making any amount of real horsepower shifts a 3000 rpm. lol
A decent 360 should make about 380-400 lbs-ft at 3,000 rpms, hp is 57% of torque at that rpm (215-230 hp), so basically 1500-3000 rpms is making 100-230 hp. Any decent 360 @ 3,000 rpms you barely got into it's powerband you haven't even hit peak torque.

A decent 318 @ 3000 rpms 330-350 lbs-ft = 190-200 hp.