I maybe wrong here, but doesn't the NOS dry kit (I am assuming that the 100hp kit your using is dry) close off your fuel reutrn to boost fuel pressure while on the squeez? If so, then you would not have to worry about playing w/ regulator settings. 24lbers should be fine (seen plenty of guys w/ similar power range on NOS w/ same inj), but you will need to check plugs for any signs of detonation or lean condition. My brother had great luck w/ the NOS Big Shot kit on his Saleen w/ stock shortblock, so even though you didn't ask you can eliminate fear of shortblock failures up to 450hp. Hope this helps!
-Jason
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351w...best E/T to date 12.59@114mph on BFG Radial T/A's
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