I've used a lot of motors on it since I built it in 1991.
After going through a bunch of Goldfire motors I got an AstroFlight 05 cobalt geared motor.
Still ran it on 7 sub C's.
A couple years ago I got a Jeti 16/15/4 brushless motor and ran it direct drive on 8 nimh's.
This year I switched to Thunder Power 3s 2100 lipos. This saves me 5 oz. over the nimh's.
The plane just keeps getting better.