The Motordyne XYZ pipe is also another great option:
https://motordyneengineering.com/pro...ith-resonator/
I went with this resonated version, but you have two other options (with a test pipe or with a high-flow cat).
It sounds great with my Tomei, but then again, I haven’t run the Tomei with a different Y-pipe...just my 2 cents.