i picked up a nismo ypipe the other day and plan to put it on my 04 sedan. i have a couple questions though. i have a coupe midpipe on there and i know that the coupe midpipe intake side hole is 2.5 inches and the nismo ypipe exit side is 3 inches. will this be a problem? also the ypipe that i have does not have any studs on it like my stock one does. and obviously the midpipe doesnt have any studs on it since it is supposed to slide over the studs on the ypipe. so do i just need to get some bolts and nuts that i can connect the 2 with? is there any specific kind of nuts and bolts i need to get? thanks