I built one of these too, really just as I was getting out of pattern in 1992. It was $99, and I was thinking of Advanced, but only flew it in one contest. Heavily modified; flattened the fuse bottom, stretched the fuse 3", Increased the rudder 2x, finished the turtle deck to the fin, build a belly pan, and put my worn out OS .61RF pumper inverted in there, with the pipe in the pan. It wasn't nearly enough engine. Those thick airfoils, and large frame were too much to fly turnaround with. One thing I should have done was a plug in wing and stab; the balsa construction makes this a simple task, and would have stretched the wing a bit. I put a YS .91 and it was a happy sport plane at ~9-9.2 Lbs. I'll see if I can russle up some pics.