thats actually part of the reason im asking.
As I have done more research online, and talked to some people. It seems most mufflers flow the same. With exception on the "straight thru" stlyes, which obviously have more flow capability then a chamber'ed muffler. So with that in mind, I want that 40series sound X10, and with 10 series will give me that. The 10 series delta force is actually just a chopped version of the 2 chambers 40 series delta force. The internals are the same, another words the "delta force" baffel or reflecting system is the same, its located in the middle of the muffler. The 40 series just has extended chambers AFTER the delta force baffel or reflecting system. I think im going to run a single chamber 10 series-3" in/out both center'ed. I heard and have been told it the 10 series should flow more then then 2 chamber'ed 40 delta force, and will be much more aggressive sounding.
I guess my next question for the exhaust experts is, whats the flow potential difference between a single and dual exhaust? If it turns out that i find a single to flow just as much as a dual then Ill go single 3". But if i find that a dual system will flow more, then ill have the dual system(like the dual pipe hookers exhaust kit comes with) with 10 series mufflers installed, and install some turn downs FIRST, see if I can acutally live like that. Then if its too loud just go ahead and extend the pipes over the axel. My neighbors are going to hate me.:biggrin: I finally found some sound clips of these 10series, and OMFG pretty loud!! Way louder then the 40 series, even way louder then my dual 40 series delta force mufflers with turn downs. Ill keep everyone updated when this happens.