I have been contemplating for months now on a turbo kit. Is it true that f-max kits are the strictly bolt on and no modification? Are they the only turbo kit that you don't have to do any extra wielding? Also, what is the price range between those two kits? I would like a kit that pretty much has all the necessary tidbits. I'm on a budget so basically trying to find reliability with a bolt on turbo system for a stock b18c1. Prices on rev-hard that I've seen 2800 and f-max 3700. Hope you guys can help me.