Try Allens Gearworks, 727-784-0452. He on the side street next to the Home Depot at Curlew and 19.

He did my 12 bolt over 5 yrs. ago and never had a problem or whining gears. I brought him the posi, which he rebuilt, bought the gears from him, had him put in longer wheel studs, brngs, etc. and assemble it all together. I did bring it to him out of the car and I put in the car myself when he was done. I think I spent around $600, yrs back.

Call him for a quote, he's good.