i thought the S12 elbow wouldnt fit as it's 4 bolt and the S13 T25 T28 is 5 bolt ??

well I've fitted them a few times and it's never caused an issue

cool that saves me some money im using s13 down pipe as the T25 was off the 200sx and had the dowpipe with it. i only had to shave off bout 4-6mm off the gbox lug and it fit fine. i am also using a s13 front pipe fits ok doesnt hit any thing just had to mod the middle section abit buy cutting the 2 bolt flange of and moving it back a bit. i have just ordered a 3" stainless front pipe with de-cat for the start of my system once on and modded i will post up