A standard rebuild kit with Borg Warner or Rabestos tan clutchs will work fine. I like solid bands with Kevlar. The stock low roller clutch is fine. Check the inner race,rollers and springs. Replace as nec. Make sure you have a 4 plate high drum. If you have a late model servo (5/8" pin) take it apart and install a couple of input/output thrust washers as spacers to make it solid. Grind the feed hole in the stator support for additional oil flow (see the CRT website for instuctions). Use a 3.8 or 4.2 lever and you'll be good to go. If you like the saftey factor of the aftermaket drum ,go for it. I buy all of these parts (including gaskets,rings,seals,filter) at my local trans wholesale house for less than $100 not including the drum.
Doug