This is the second time that te Auto trans of my '94 3500 Diesel 2wD fails and I'm really fed up with this.
Does anybody has changed the Auto trans for a Standard?
What is involved in that? Flywheel, Pedals, what else?
Will it fit a 94 std trans from a Gasoline 350?

I don't know all the particulars of the swap, although I'm sure it's much easier than on a newer truck.
I think it was 93 that GM started using NV4500 trans in their pickups, 3/4 ton and up. I do know that transmission is near bulletproof.
I'd think w/ a donor vehicle from the junkyard would get you all the parts you needed.