im guessing that if your max rpm is gonna be 6800-7000 im thiniking comp cams will help you out!!!i dont know much about methanol,but im guessing 270 @ .050 intake-280 @ .050 duration with as much lift as you can stuff in there in a solid roller will give your peak hp in at 6500 rpms roughly.you should really seek advice from a trusted engine builder on all these quesions youve asked on this thread.....but be conservative on cam and dont make the same mistake i did and let my motor builder put in way too big cam( 286/296 @ .050 solid roller 321/336 total)when im only gonna rev my 572 to 6800-7000 myself.