From what I read I should have done a full segment swap on the transmission part of the tune. So that is what I just did and now it shows my trucks tune as having a 4l80e. Hope this works, I'll post what happens later on today.
Yeah, its going to have some long shifts for sure, my truck has 3.42 gears and 29.5in tall tires. First gear should be good for about 60mph and 2nd will go until 100mph, its going to be like running a powerglide. The plan is to put on a turbo soon and I dont think the tall gearing will hurt it much then.