Need Help on Magnum 360/380 hp Crate Motor Tech Info

Also if you don't have intake yet I'd go rpm airgap. I plan on switching sometime down the road. Theres a shoot out between the airgap and the M1 single plain. Both make similar top end but airgap makes 40 lbs-ft at one point and 20 lbs-ft average down low.
Especially will come in handy were your going 5.2.

Also if you decide to go EQ or edlebrock heads you'll just pick up 30-50 more hp plus opens cam choice since you can go more lift.