Hey I have an 07 rappy and have a pro circuit slip on, pc3, prodesign air filter kit, razr2's and a 15 tooth front sprocket. I have some other visual upgrades and stuff but im tryin to decide on my next upgrade. Would you say that the amount of power you gain from a header is worth the $250 they cost? or do you know of any other mods that arent ridiculously expensive? thanks.