Have you done the usual stage 1 mods first?
UNI filter, rejet, coil, CDI?
Have you done anything to your exhaust?
Have you done anything inside the trans yet? Main spring or different roller?
Installing a bigger cam without doing anything else isn't going to gain you very much.
A12 cams are really good for bottom to mid gains. But you must watch your RPMs. While lifting the valves more at high speed, you creat valve "float" issues and can actually bend your valves.
"float" is when the inertia of the valve's weight causes it to not retract back into the valve seat. Making it really easy for the exhaust valve to be struck by the piston coming up to Top Dead center. Stock springs are pretty weak and cause issues pretty quickly if you start to over rev the engine.
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