WheelieMonster

so i installed a jwt popcharger which i am very pleased with but now i want more..so i was thinking about a 5/8 plenum spacer but wasn't sure which one is the best..whats your guys views on it?.also i found the air duct on ebay that you cut into your front bumper it seems like a good thing to me but is it really worth it power wise?..im a college student so i am tryin not to spend too much $$ at one time but i just want to make sure i also do it right the first time