4L80e?

[Factory Guy]

Thinking about doing a Tranny swap to my truck in the future. Long term placing a LS in my Truck. That being said I am thinking about doing a 4L80e first. Yes I know the 4L80e needs a computer and will not work with my 350 straight out of the box,

I am pretty sure Gearstar, overhaul's, and makes a pretty good transmission. Are there others who do a complete rebuild and make a good complete 4L80e rebuild?

I do not need a "Gearstar", just a good strong unit.