want to fit in smog... long tubes: dynatech or american racing headers where your cats are kept. a nelson tune would help you alot. vette servo. cold air. underdrive pulleys. bla bla just look around. you can see everyones mods on every one of thier post. you spent ALOT of money on the lift. i give you major props dude. cognito and bulletproof are the most BA lifts out there for a IFS truck.