4L80e Converter choice opinions...

[1976K5CHALET]

Been driving my 6.0/4L80e swapped 90 Jimmy for a few months and i will be dropping out the trans to replace the crank seal that's leaking. The guy in Vegas who did the conversion charged me 6-700 bucks for a supposed TCI converter but my eyeballs see a bone stock gm converter behind the fly wheel. So while the trans is out i'd like to swap in something affordable...even slightly used if need be from a good source. There are a lot of choices out there and it makes my head hurt. I will be doing some towing if life continues to suck next year (unemployed directional drilling mwd hand of 10 years) as the last resort is a camp trailer behind said jimmy and doing the hobo joe park for two weeks and re park after move until life gets better. I have had the pan down to replace the harness since it was missing two of the 4 tangs to hold it in place. Almost needed a jack hammer to get the pan off. Idiot in vegas must have thought the leak was the pan so he siliconed the bajesus out of both sides of the pan gasket....anyways the fine shavings in the pan were what i'd expect out of a taking care of trans with a few miles. While we are on the subject any thoughts on a valve body with a shift kit?

Thanx in advance guys.

DW