The popular K-Tuned 4-2-1 Budget HEADER for K-series engine swaps is back again with some improvements. This HEADER is capable of making very good power on relatively stock or mild engine setups. The main focus of our K-Tuned Budget Header was to blend excellent fitment, high quality construction and keep the price reasonable. We have now slightly upsized the primary piping and improved the quality of all transitions to maximize EXHAUST flow. The primary to secondary transition now uses an expanded secondary pipe at the joint to minimize restriction. The secondary pipes have also been changed to merge together better at the collector. Constructed with stainless steel using 3/8 thick flanges that are double welded and then ported for optimum flow. The piping is extra thick for added strength and to allow better weld penetration. These strength features add longevity and make a header that will be able to take the abuse of rigid K-swap engine mounts. The strong interlocking flex-pipe can take a lot of heat, retains a 2.5 ID, allows for max flow and absorbs engine movement. Like our other headers, they are designed to fit K-swapped cars perfectly. They do not interfere with shifter mounting kits and are well centered in the EXHAUST tunnel. The 3-bolt exit flange prevents leaks and allows for installation to the existing exhaust piping with minimal modifications.