[FL71C10]

I am thinking about doing an LS swap into my 71. I found a 5.3 motor with a 4l80E transmission that is in a 3/4 ton 2000 model truck that was wrecked. Is that transmission OK? I've heard that it's better to go with the 4l60 since it's lighter. I don't plan on modifying the engine at all.

Any comments or suggestions are appreciated.

Thanks!