Welcome. The Big 3 is always a great start (air filter, Exhaust, EFI Module). In my opinion either get a full exhaust or a slip-on that you can later add the header to. This is one thing I regret. I love my slip-on but I really wish I would have gone the route of FMF so I could add the Powerbomb header. As far as air filter goes, if you are going foam the Uni is great. For a paper filter Velocity seems to be a big hit. Finally, the power commander is the best EFI module out there but others work as well.