alright i have an 05 gtp. ive got a zzp 3" downpipe with high flow cat, powerlog, ported rear manifold, ceramic coated crossover pipe, 180* tstat, k&n fipk intake. im looking into getting a 3.6 pulley i was thinking throttle body spacer, 1 heat range colder plugs and a tune would also be changing the s/c oil. would i be safe doing this? and if u guys have any advice let me know