It may not be budget friendly, but after seeing MOPAROFFICIAL’s response with the speedmaster/ProMaxx magnum heads and having first hand experience with magnum power, that’s my favorite option here. Maybe see if they’re available for sale on Black Friday. Get their air gap intake while your at it. Upgrade springs and retainers for extra lift, and I would probably upgrade to this cam being you’ve already got 3.91 gears and 2800 stall. The 1.6 rocker ratio makes .507/.532 lift. Howards Cams, Retro-Fit Hydraulic Roller Camshaft & Lifter Set, Chrysler SB, 221/225 @ .050, .475/.500, 112 LS-Competition Products
