im assuming by big 3 ur refering to turbo, S/C or nitrous, right? if that is infact ur 3 then it all depends. what engine? how much power? do u wanna race? if the 5sfe then u can custom turbo or try to track down a ripp s/c. nitrous is also an easy option but not one i would consider. if i had the 5s then id want easy like the ripp but that will pretty much bring the power equal to the V6(which isnt worth it imo). but id go with turbo for more flexibility and more power but more of a hassle. ignore this if thoes arent ur three