I don't know if this is considered to be the best but I'm running
Kooks long tubes with a
Corsa exhaust and it performs and sounds great. It's 3" all the way back using Kooks new 3" connector pipe eliminating the step down to 2-1/2". All of my friends say it sounds great but I think it's a little too LOUD!!! I'm sure all my neighbors think the same at 6am.