been told that 98-99 headers will fit my 07 and that i will see an increase in performance and lower exhaust temps if i get one since it doesnt have a cat. what are the pros and cons of this mod? how real are the gains and what are the draw backs? also, and most importantly, about how much should i expect to pay for one? there is one on ebay for $170 and it is beat to hell! seems hi to me but i dont really know. need a little knowledge before i start saving/searching for my next upgrade. thanks guys