I have a evaluation 26 in mine and it flys it ok but slow. Not a lot of extra power. I am now in the process of ripping out the beam mount and installing a firewall. Then will be putting in a 36 with a 10 pitch as described earlier. If you build it very light the 20 range engine will be just fine. Mine is on the heavy side due to all the scale detail I did.

i have Robart electric retracts in mine but century jet make retracts for it as well.