Ok sorry ask so many questions

I have brought the following for a great price

https://rover.ebay.com/rover/0/0/0?m...2F180769916721

says it fits my sti 2005 type uk

have my car in bits doing a few things

just measured the pipe it’s 3 inch would it still fit?

am confused any help welcome

 

Same fitment as the japspeed

so can a 3 inch downpipe mate a standard sized centre section

 

Standard centre section will be 2.5” and won’t fit that 3” flange. I think I remember seeing someone mention there’s a company does reducers/crossovers. Then there’s the issue of length of existing vs the one you’ve bought.

 

Does anyone now the 2.5 inch gasket bolt pattern dim

 

Just been and measured a 2.5" cat pipe I have and the bolt holes are approx. 10mm dia. on a 105mm PCD

 

cheers mate

went out at lunch and did this

 

It fits the bolt pattern!

 

You're not doing what I think you're doing, are you?

 

It fits jokes aside

can I make this work some how

 

There wont be much of a matching mating face between the two flanges. I roughly cad'd up a 3" and a 2.5" from dims i found online. There's areas at the bolt holes that only have about 1mm matching faces.

 

That’s super tight