Slayer Posted October 6, 2023 Share Posted October 6, 2023 Hi all, could anyone advise how I could fit the 1st cat from a UK spec Supra to a J Spec ? as the bolt pattern does not fit, my mechanic does not know how to modify the bolt pattern, could anyone recommend who would be able to help putting it back on? my mechanic keeps telling me that it would fail MOT without it. Thanks. Quote Link to comment Share on other sites More sharing options...
zen Posted October 6, 2023 Share Posted October 6, 2023 You wil need a cat from a j-spec. The UK will not fit like you noticed. The flange is completely different. Quote Link to comment Share on other sites More sharing options...
Slayer Posted October 6, 2023 Author Share Posted October 6, 2023 I know, I think I saw it somewhere that the bolt pattern could be modified to fit. Anyone ? Quote Link to comment Share on other sites More sharing options...
Marty Posted October 7, 2023 Share Posted October 7, 2023 It can't, as Zen says, they're completely different size flanges, the uk one is much larger, possibly different length cats too. Resurrecting old brain cells here but i think the uk specs bolt on to an egr whereas the jspecs don't, that's why they're different. You'll never get one to fit. Source a 2nd cat, your car will pass emissions with just that installed, no need for the first one too. Quote Link to comment Share on other sites More sharing options...
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