The seller, to start off, went above and beyond for me. I saved $60 for being in the military, which is huge for a company like this (mostly its only 5) and the part was above and beyond what I expected. I average about 1-2 mpg increase which is an additional 40-45 miles a tank in my case. It sounds great, especially pared with the manual transmission. The throttle response is improved, I noticed, especially in 2nd gear. It is loud, so those that don't want any roar to their trucks, I don't advise putting this on. It isn't to loud or overbearing to clarify, but if you want it to sound stock, this isn't your best bet. Overall it is a great product, and I would highly advise purchasing this.
Great sound and power increase, Loud!