Drove it on the freeway tonight. The engine cruises at a way lower rpm than my truck did. My truck had 3.90's and a SM-318 and the rpm's were around 3000 @ 60 mph.. I'm not sure what the axle is in this but I know the tranny is an SM-420. I don't have a tach but from the sound I would guess she was at about 2200 or so rpm's at that speed. I love it.
She did great though. Here is a pic after I got the license lamp wired up before I took off.