I will share this with you, you probably don't have as much time to read everything I have since I own my 6.5, and plan to keep it for a long time. So I will help you with the info I have learned over the past few months on my first 6.5 buildup.
If the truck is a 92 or 93, it has the DB2 mechanical pump. If it is a 94 or later, it has a DS4 electronic pump.
That being said, if it is a DS4, do not put the PMD (the little black box on the side of the IP) back in the stock location. You need to invest in a remote PMD kit with a heatsink and a 5 or 6 foot wire harness extension, and mount it somewhere out of the engine bay (like behind the front bumper somewhere). While you have it out, replace the OPS (oil pressure sender) with a stock AC Delco part, no imitations. The OPS contains a circuit that sends 12V power to your electric lift pump, and can be a burden if the circuit goes kaput on you. I would also replace the oil cooler lines, make sure radiator is free of any debris inside or outside. Finally, if it doesn't already have one, upgrade to a HO water pump. 97 and newer trucks should already have one. If this engine is older, just order a pump for a 97 or 98 truck.
Since you have a kit, you probably have everything else covered. If you have any trouble locating the specs, I have them, will scan them for you if you need them. We really need to put a FAQ section on this site for 6.5L, I agree.