Bought this red hot Flowtech glass pack for my 2000 xj 4.0l. I cut out the resonator and welded a new pipe and hot double glass window into the factory exhaust. Sounds good for a price under $20. With the extra pipe I was still under $30 since I welded it myself. Yes, the paint burns, but I don't care. The price is cheap, so why bother about the color.