I bought a Magnaflow Res from Vic and plan on having the exhaust done this weekend. I was going to have high flow cats installed as well but I took the SC to several exhaust shops around town and they either wont touch the cats or charge way to much to install them. So, what I plan on doing is just having the resonator installed and deleting the mufflers. Where I need the advice is do I run 3 inch all the way out from the res or shoud i have it reduced back down after the resonator?