I went to Walmart the other day, I went to look to see if there was indeed ATF-4. There was, I read the back and it says use for automatic transmissions and some Chrysler or Mitsubishi Manual transmissions.

And get this, right next to it was a quart of ATF-4 that said MOPAR right on it! :| It looks just like the dealers nv-t350 bottle but had ATF-4 on it. I read the back and it also said can be used in nv-t350. Walmart fluid was $3.50 a quart, MOPAR fluid was $5 a quart. I spent $15 a quart at the dealer, but whatev I guess, I have extra money to spend.

Edit: (condensed from other post made by this User)
I just thought Id update this, I have $15 a quart dealer lube in my tranny now, and the thing shifts like a dream. Theres absolutely no resistance to go into any gear, and surprisingly, there is no "CLACK" when you shift into reverse.