350-400hp...
AC code injectors, 38r with a 1.15 housing... If you want to be at or above 400hp then throw a set of 100% nozzles on the AC's.
AC's with a 100% nozzle, 38r or H2e and SRP-1 would put you right at 425hp...
I just dont see the need for a standard hybrid on every truck. If your looking for more then 450hp, then go for it, but otherwise a new set of AC injectors are some of the best money spent.
No studs needed, No valve springs, no tranny changes (assuming you have a good valve body and tunning), just throw them in and drive.
I have stock AC codes and a 38R on my F350. LOTS of fun to drive and an awesome towing rig. When I built the engine I did do studs, valve springs, chromo push rods, etc - but I knew the AC codes and 38R were just the beginning.
BTS is by far the best investment I have made yet. Not only is trans great, but the education from hanging out with Brian for a day is worth the investment.
I agree with whoever said have your END GOAL in mind when ya start your build. ie, if you know ya wanna make 450+HP one day with a charger making 50psi - I think its 100% worth pulling the engine to install studs, springs, etc AND do your 'initial' injector/turbo swap at the same time. You can always do big oil, turbos and injectors in the truck later.
My opinion is fuel system mods are a waste of money. #8 starvation in particular is waaaay overblown and the factory system does an excellent job of filtering the fuel (with the exception of the in-tank mixing chamber/pre-filter - it has to GO). Deadheaded, the factory fuel system can easily support 400-450HP and prolly quite a bit more. This opinion is seldom shared by people who invested in RR, so I will now don my flame-suit!
To start with, I'd plan to 'fix' all the issues and parasitic losses common to our engines - up-pipe leaks, boost leaks, oil leaks, etc. (ie. - Int'l bellowed up-pipes, Riffraff CAC boots and plenum inserts with t-bar clamps)