Mine is 11:1 compression for pump gas, heads flow 430 cfm on the intake, cam is a roller but with similar duration (mild grind for street durability), and a single dominator on the Barton cast manifold. Performance in my sig. CHIP

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax