I did a frame off on a Cutlass in '01 I think in 4 days, without a lift. Full frame strap(not a heavy ass wrap)with channeled rear, A-arms upper and lower, rear-end with power balls, drove off on springs and cylinders to do the rack himself. We finished the install and the car was bangin' at 52", where it won the hop the next day. 7 days from start to day of show, not too shabby!
Also my boy and I did the frame swap on the red MC in my avatar in something like 14 hours. Would have been a little quicker but we had to swap everything from the existing frame to the new, we did have a lift though. It's amazing to have a car totally apart in the afternoon and rolling back on a trailer goin' home a little after midnight! Can't remember why it wasn't running but it was late and we were pretty much done, just wanted to get some food and a little thing called sleep! Oh yeah, and we had an hour drive home on top of that. Crazy shit we do for these cars, I've done countless all nighters, none for a long time though!