looking for right exhaust for bp swap

[bravekozak]

What you really need are electric header dumps. Just hook one up to your keychain.

[Christ]

Here's what I built years ago. Very compact and flows freely, but it cuts out high frequencies from the exhaust so well, that on the 2.0 I had it on, you'd hear the engine up front over the exhaust the higher you revved it. But still rumbled at idle and cruise. Cheap too. I was out of a job when I built mine from galvanized fence post and a salvaged stainless steel toilet bowl holder. The rounded divider was a post cap.

Do exactly that with Sch80 PVC, and it'll be even quieter. PVC is acoustically inert. It absorbs resonance.