Eric, Your old '79 Skippy 20'er is for sale on CL. The guy selling it says he bought it from your friends, who bought it from you. I have come to the conclusion that the motor is still the AQ 271 which you bought and installed back in 06-07ish.
Owner doesn't seem to know much about it or the out drive (VP 280), and I was hoping, if it isn't too annoying that you could shed some light on the boat.