Injectors=pointless to change before pushing 700-800HP..i would leave them alone.
Garret Turbo=lots of good air and is a very popular turbo
Exhaust Brake=for the ones that have they lovem but not alot of guys spend the $$ for one
Fuel System=to run your LBZ at its full potential you will need a 150GPH Fuel System,the race valve,Hot Injection pump or better yet the Duall CP3's..
Engine Upgrades=your LBZ wont last long with doing this so my suggestion is doing some internal engine upgrades also or have it go boom.this guy can tell you all about the LBZ and high HP
LBZ Rebuild Has Started
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James

TyreBoyz Pulling Team
Pulling Truck called Late Nights.05 LLY 3500 EC LB DRW tuned By Idaho Rob.
Work truck,06 LBZ 2500 CC SB SRW,tuned by Idaho Rob and PPE at times
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP.