IVE FOOKED UP
ive got an 88 xr3i cabby which has an mfi engine and is standard.

i bought a powerflow backbox off an s2 and went 2 fit it in my garage 2day.

i took the exsisting system off at the first joint(wher joins on 2 manifold)
had the section on floorand put he s2 up to it 2 c where 2 cut the mid pipe(the 3i has 2 silencers on the mid) and the powerflow doesnt.

so after offering up,and cuttig the rear silencer off at the weld-WITH THE GRINDER, I REALISED-THE DUMB FOOK I AM, that the pipEs are 2 different sizes.

the original is 45mm and the new is 60mm.

so now, im stuck with a car with no exhaust that sounds like a chiefton tank.

i only live 4miles from demon thieves,but as the name suggests,im gonna pay a fortune!!!!!!!

can any1 help with ideas????

also,is the 3i manifold different 2 the rs and if so,can i fit 2 the 3i???
if not-WHY

CHEERS
STU