the reason i'm asking is cuz i'm getting a BIG bonus from my job and then i just gonna go MOD CRAZY!!! i plan on Vortex Sprockets -1+2, Gold Regina Z-Ring Chain, K&N Air Filter, Speedohealer, and PC3... i already have a Two Brothers slip on, and i'm just wondering if i should wait untill the warranty is up (in May) or am i ok to install?