I had an Ace 4-60 with an Enya 60 fourstroke, a few years after they quit selling the 4-60. Wish I had another. The 4-40's just a smaller version. Lots of area, yours will be suitable for a 40 fourstroke. Thick airfoil, fly it nice & slow and it'll do anything. If you want speed, you'll be disappointed, but if you want to do the sport aerobatics you'll be delighted. Nice inverted characteristics, tracks nice. Mine had the goofy windshield on top the wing, sort of simulates an open cockpit, no pilot in mine. Looked a little wierd, but flew fine.

Good luck,
Dave Olson