exhaust
 

hi there could anyone tell me if s12 and s13 down pipes are the same

IIRC they have a slightly different bolt pattern between the T2 and T25

if the diameter is the same could i not use my flange

Turbo end or exhaust end?

turbo end, basicaly i would like to fit a larger bore down pipe

If you mean swapping the T2 flange onto a T25 S13 downpipe then wouldn't it be easier to just go for the T25 conversion and possibly even buy a buy a SS downpipe?

I can't see it causing any problems so long as you're handy with a welder. I didn't think that there was that much difference between the two though?

dont realy want to convert to t25 just a bigger bore, might have to knock something up myself just wondered if there was an easy way round it, ta for the advice anyway