what would make more hp a good set of headers (like nismo) and some hi flo cats (like rt ) or juss getting xerd headers which completly eliminates the headers?

 

price to hp ratio is the cats.The headers+ install is alot. You would be happier getting high flow cats and an exhaust. Headers are a B*tch to install on our cars. And you can install the cars and exhaust at the same time yourself, with jackstands. Quite easy.

 

I agree go cats first and free your car. Then exhaust.