Email Keith at the address he just gave you. Every system is built to your needs so it all depends on what you are trying to achieve. I went with the 6" standard bolt on stainless steel because I don't plan on headers or anything else.down the road. As soon as I get it installed I'm going to post some videos since there aren't any 6" videos around.I'm planning on the BAMuffler too. What is the pricing for their setups? I haven't seen prices anywhere.