$660$

[tallkid]

for 660, i would get the BMS intake, UD pulley, buy some thick gauge wire and terminals. you'll have like 100 bucks left after that and you'd have a decent difference in performance...or you could buy higher compression pistons from GSE for just over 500 bucks, but that doesnt include installation...and when you're that deep in the engine, you might as well do all the internals like i am

[azzo540]

buy the underpulley
save some money and buy the exhaust later