I'm doing a clutch first cause I hate the stock one. It's too soft and I know it's not gonna hold what I do to the car at all. I'm also going ahead and getting the Shep trans done b/c I want to switch out to the longer evo 8 4th gear. And these trannies seem to be a little weak too. I already have a drop in filter so TBE will come after the drivetrain is taken care of. I would definitely listen to these guys though. Do a tune after you have at least a few bolt ons like TBE, MBC, and drop in.