So I recently got an intake for my 08' EX35 and the next step is a high flow catalytic converter before a tune. However, I have no idea where to start. I've tried google searching but haven't had any luck. The only thing I can think of is to take it to a custom exhaust shop and hope it isn't too costly. Any help would be appreciated!

Thanks for the help finding one
Would this bolt right up without much trouble?

yes, no modification needed.

Awesome, thanks so much for the help