4l80
Note: Compared to 5 years ago the value of a 4l80e has dropped significantly, they are really only worth $200-300 as a core now. GM built more than 1000 per day for years, so the market is really saturated now...
And that question should have probably been in a different section.
You have to change the output shaft and tail housing (make sure the ring is on the shaft, 4x4 has it in the carrier)
Used rebuilt stuff is iffy, I just look at it as a core, unless I personally know something about it





