So the wildcat ones look to be 4-2-1 system, compared to the RPW/Hurricane 4-1 system.
For these two products I’d say their quality is roughly equal in my experience fitting them to other cars, but someone may have more insight. Definitely more than good enough, but not show ready out the box. Personally I’d be more interested in the functional differences.
Provided the 4-1 is equal length, you’d really want to compare the primary lengths there.
I never went down the N/A pathway. I turbocharged my 4g94 instead.
I can look over my notes on exhaust theory during the week and report back.