The SS is a great flying plane. I have most kit versions of this plane stashed away for future builds but did build the 20 sized version. My only regret was my choice of a .25FP instead of a ball bearinged engine. Flies ok but could use more oomph. Retro-fitting a ball bearinged engine is gonna be a PITA if I decide to go for it. The Irvine .25 and GMS .32 engines I have on hand will not fit without re-building the front of the fuse. Would have used the Irvine originally but the plane was going to be done up in Steeler's colors from day one and the red Irvine engine would have stuck out like a sore thumb.
Recently acquired an OS .25F and will probably retro-fit that.