New torque converter, what else?
 

I gotta replace my torque converter. What else should I have done at the same time?

New seals in Trans and transfer case? Rear main seal on cummins?

I've got about 150K on her.

I just put a single billet in my 01. I put in a new front trans seal, I also did a tranny filter and set the bands. I should have got the t-case front input seal. It was hard as a rock and had been seeping between the tranny and t-case. You need around 14 or so liters of fluid, I didn't buy enough ATF +4 the first time. The truck feels great now, it had a bad shudder when towing under light acceleration before.

That shudder is exactly what I've got. My Trans guy is talking billet in mine too.

Ps. My Trans guy is not a cross dresses. Lol.

What you need really depends on what you plan on doing with the truck and your goals power-wise. Atleast billet single disc converter, vb shift kit, and master rebuild kit- that kit has every seal and all clutches.