Ok I bought a KF IV fuse from a guy last year in PA (where I live) and I need to consider engine choices. I am considering the following:
Rotax: 583 & 912
Viking: 90-130

Is the 582 a viable engine choice? Price seems to be right.

912 I see just as much problems with this one as the 582....and the prices are staggering. Why? NOT Certified.... 582 priced right and looks to give good power.

Viking engines have not heard much in the way of Viking powered KF's These are priced very well and complete package seems very nice. But that 582 keeps coming back....

I'd like to keep the price low but really want reliability not going to go real fast or need super performance, Just don't want any surprises.

FH~