[mongocanfly]

You may be better off/much cheaper to keep your t350..and just do the ls engine swap..not saying it can't be done with the newer trans..but when you get done with adapters, controllers, shifters and whatall and more than likely new/modified driveshafts your going to be deep in your billfold just to get a couple more shifts ...my 2cents

In your post you say 6l90e at the top then on down you say 4l90e..

And don't knock a 4.8..they often get overlooked but can be made to put out some incredible hp numbers if needed

1500 is not a terrible engine price if complete with everything..I know its different realestate but I can pickup 5.3s around here complete with trans for a grand..buddy of mine bought a complete engine/trans combo last week for 900