Hey, my friend has a 1999 Mustang V6 he currently bought. I know the basic bolt ons are i/h/e but which brands do you guys prefer? The search didn't work so I started a new thread. He doesn't want dual exaust but how is flowmaster 50 series? He doesn't want the 40s because it's very loud and would like to muffle it as much as he can but still wants a nice sound. Is it worth the extra money to get the whole exhaust system for this car or just the muffler?? Which brand of intakes do you consider top of the line? or any brands you may know Also, headers will be the last bolt on he will do but I would also like to know which company is the best or anything. Thanks a lot! I told him to do performance first and then he will be doing exterior.