They claim fitment for Acura B-series and EVO. Is there any reason other than exhaust diameter (2.5") this wouldn't work on an EJ6 with a fully converted 2.5" catback w/aftermarket header?

I've tried contacting them directly and the response so far has been non-existent.

Tried to find the dimensions of a B-series cat and have been unsuccessful. I think it will fit.

Thanks.