hmm so i tried to put on an r33 gtst catback on my 34 gtt, hangers line up (just) and it sits nicely. but theres now a 15cm gap between the end flange and the front pipe flange.
problem 1 - cat wont fit in that gap
problem 2 - both flanges are on the same angle, so even if the cat fit, 1 of the flanges wont line up
solution - get a 15cm decat pipe made with both end flanges on the same angle
incase anyone was curious...
f**k im so helpful