Vibrant SS Resonator (Standard Design) 4in inlet/outlet x 18in long w/5in OD resonator body Forced Induction>Turbo Kits the pumping mechanism features a

the pumping mechanism features a composite rotor

billet camshaft blanks that have increased torsional strength

then you need a Stock Replacement Drum and Shoe Kit

Snow Performance Lower Housing Assembly (For 40900 Pump)

Vibrant SS Resonator (Standard Design) 4in inlet/outlet x 18in long w/5in OD resonator body Forced Induction>Turbo Kits the pumping mechanism features aVibrant Performance standard bottle style resonators are round bodied, densely packed with our premium multi layered sound absorption materials, and manufactured from 304 stainless steel and CP1 Titanium for optimum durability and corrosion resistance. Vibrant Performance standard bottle style resonators have a sleek design that is optimal for easy installation and work to maximize the reduction of exhaust db levels. Catalog