a good single disk converter
billet super servo and cover
power wedge anchor
hd band strut
A performance valve body or shift kit
upgraded GM SOLENOID and transducer
These are a good starting point imo and most of the listed parts can be installed by a decent home mechanic.
Find a local rebuilder to reman the trans internals and get a good warranty. I found a local shop advertising on EBAY who happened to be local and had mine rebuilt for 900.00 with 2yr unlimited mile warranty. The converter came from Roadrunner converters in Phoenix they rebuilt that for 350 and it is rated to 350hp750tq if that goes it also has a warranty of 1yr unlimited. hope that helps. If i would have had the cash I would have gone with performance innovations,HTS, or suncoast to name a few, they have good warranties just out of my range.
99 eclb, 4x4, auto $SOLD
94 rc/flat bed, 4x4, auto $traded
00, 2500, 160k 01 engine 300k truck?, 2wd, 5spd, qclb, BHAF, pyro/boost gauges, XZT