Well... . most of us here on the TDR do things by buying individual components, as opposed to buying some sort of kit, like one of the Banks kits. There is certainly nothing wrong with going that route, there are many fine kits out there. But, a lot of us feel that some of the kits are too restrictive (for example, the Banks kits limit the added power so you maintain safe EGT levels, etc. ) and are quite $$$ for the modest power gained.
Edge Products, TST are some of the more commonly used electronics boxes for the 24 valve engines.
Diesel Dynamics & Bully Dog are the most commonly used injectors.
South Bend & Enterprise Engine make the most commonly used clutches for those with a proper transmission
DTT, Suncoast, Dunrite, ATS, BD-Power are makers of excellent auto trannies.
Piers Harry & Kwik Kurt are excellent sources for upgraded single turbos. HVAC & Enterprise Engine are great sources for twin turbo setups, as well as other TDR members.
Check my truck profile for the goodies I have added.
Tom