the cossie .63 has three nuts on it i belive as i was trying to buy rans .48 off him

and the t3 (rs) only has two!...

buy u have a t34 (cossie) turbo so im guesing its just because of the shape!...so its about your xzorst like cliff(dave) says he needed a down pipe made up!

(hope im right,and hope this helps)........plz correct me if im wrong!