RE: SIG Four Star 60 modifications
The motor was a simple install, in fits as easily as a .61 would. The ARF should be quite easy to build, I built the kit as my first kit plane and is was a blast to do. I didn't do many mods to mine as it is built quite well to begin with. I just replaced the top stringers on the turtle deck with spruce instead of using the balsa ones that were included in he kit. Then I cut one bay off each wing tip after I had a few flights on it to improve the roll rate alittle. Here's a few pics of the wing mod, quite easy to be honest.
Shane