Hi i have a 66 mustang and was wondering what kind of pipe i shoudl put in. i have some hooker headers going through, the long tube and currently have an H pipe, i am goign to replace the entire exhaust so i want to know if i should stick to the H or go with X, pipe that is, also if the X pipe wont interfere with any other parts in teh car, ex: driveshaft, brakelines, etc. help out if you can thanks

 

h pipe is better, i dont know if anything will be in the way

 

Based on what? How about some facts to back up your opinion?

I prefer the X. It tends to smooth out the idle even further and has a much more pleasing sound. Odds are though, you won't notice any performance improvements (over an H pipe) in day to day street driving.