The Detroit Speed Mini-Tub Trunk Closeout Kit is a complimentary product to the Detroit Speed Mini-Tubs or QUADRALink kit. This kit was designed to be installed to give additional exhaust clearance between your wheels and around the front of your fuel tank. This kit includes 2 oversized closeouts that can be trimmed to fit in the trunk pan and welded in place. This kit is recommends when installing 3" diameter exhaust system.