Re:auto tranny up grade questions
 

You didn't mention the mileage on your truck, since its an older truck I would at the very least have it gone through internally and replace anything that needs it. The price would depend solely on what was broke or in need of repair. I just went through mine at 40k........and replaced the 3rd gear clutches, 2nd gear band and the rear planetary, thats it. I did some upgrades while it was out which is the whole reason I went inside it this time, billet input and front hub with a few other things. I ran just a shift kit for a while at about 300hp, and then a simple VB and TC for a while low 500's on hp.....it had about 125 to 140 dragstrips runs.....lil bit of sled pullin, and multiple nights of harassing the local racers, oh and ran out of fluid completely once too.

I was shocked it "needed" so little.

Re:auto tranny up grade questions
 

The truck shows 142,000 on the clock but I have no idea if it has had any work done the shifts are sharp without hesitation I posted another question as how to tell if it has a low stall converter I put the truck in reverse and stood on the brake and reved the engine and it started to pull at less than 1000 rpm and somewhere around 1500 the tires broke loose. I have read that they are suppose to stall to about 2300 but this one seems lower than that but I do not know for sure

Re:auto tranny up grade questions
 

Try that in Drive next time, the tires will break loose in reverse sooner than they will in drive.