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M52 manifolds & exhaust on M54 car?

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Hi all. 

I currently have a 325i MSport Touring (M54B25). I’ve got a blow from one of the cats right where the manifolds are. 

I have a cunning plan...

Can I remove both cats (and manifolds in the process) replace the manifolds with M52 manifolds which don’t have cats and then buy an off the shelf stainless exhaust to fit an M52 engined touring - like a 328i of the same year? 

I seem to think I’ve read somewhere that the block is identical? And the bodywork can’t be different between the 325i and the 328i can it?

Will it all fit? It seems too easy. 

Please sanity check me!

Thanks, Sean. 

Edited by Fenderboy

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