Thought I would post my dyno results just for comparison.. I have a 408 w using fully cnc AFR 205 HEADS, Custom grind solid roller cam, vic jr intake,quick fuel 850 double pumper with msd/dist/6al. Found the sweet spot at 32* total advance. max hp was 436.9 without airfilter and 427 hp with air filter. Torque came in at 400 at 2600 rpm and max 430 torque at 4600 rpm here is the Hyper link
http://www.youtube.com/user/bermblaster41 Bermblaster 41