[davepl]

I have the 4L80E. They're big (like a TH400 that our trucks came with though) and heavy like a (TH400) but they're strong as heck and have a great overdrive.

I made sure to get a STOCK rebuild with a STOCK converter as I'm not racing it.

You have to solve the speedo issue as there is only electronic. You can get a box that drives your speed cable electronically for about $600, but you can get an aftermarket tail stock with the speedo output cast into it for $695, and as brutal as that is, that's how I'd go.

Then's its just your standard swap - need a controller, length will be a little different, etc.