I found a 4l80 on CL and dropped it off with my tranny guy about a month ago, he tore it apart and replaced a few worn out parts. I also bought a set of ported and polished oval port 454 heads, custom ground cam and a set of lifters from vortec pro in Co Springs. Guy was really cool to deal with and guaranteed me over 500/ft lbs of torque and at least 425hp out of the stock rebuilt bottom end if I bring it back once the motor is all re-assembled.
Work has been pretty crazy and haven't had much time to get anything done so I decided to just load the truck up on the trailer again to have the motor/tranny and a few other odds and ends finished up at a friends/mechanic shop