single muffler application compared to dual exhaust?
 

what you guys think of the single muffler applications that greddy make with the ti-c exhaust, that JIC make with there exhaust. im kind of thinking about doing the single muffler instead of the dual exhaust. i dunno why but i kind of like the single muffler applications

I had a single on my 350z - it weighed less than a dual but just didn't look right with the dual outlets on the bumper. Sounded great, though - it was JIC.

I've read that some times there is an increase in power.(?)

I think you'd have to be really die-hard to go with a single for the power and weight vs dual with similar power and much better looks... but I've known some racers that ran single on their 350s and they were very loud and very strong cars

I guess a 2 into 1 into 2 type muffler could be used? Heck, I dunno what's out there that could work, if anything. Whatever it is, it'll likely have to be customized to work with the 370z though...