I built the Skybolt when it first came out - the only mods I would make if building another would be to find a better landing gear - the one that came with it just wasn't beefy enough, and I would use a YS 90 or 110 - mine had an OS 120 in it - the plane would have performed a bit better with a bit less of weight - it didn't need the extra power of the 120.

Dan