Hi Ric,
I would think that the KAI model would have more HP as it is on a 30" deck self propelled machine. I bought a 21"Toro Super Recycler last spring for the pastor to use at the parsonage and I looked at the 30" machine, don't remember what it had for power. When I browse the engines on line I'm primarily looking at twins with more than 20 HP. I try to keep up with what is new and what is actually available for repowers, as most new production engines are not readily available or not available at all as a separate engine.
At this point in time I'm pleased with the 30 Briggs Professional Turf Series engine that I repowered my Scag Tiger Cub with. It has 110 hours since last March, but time will tell. Definitely a much better air filtration system than the 26 HP Briggs ELS engine that it replaced and with collection system bags hanging a few inched away from the engine, dust is a serious concern. Getting anxious to get spring cleanup going, I'm going to get this machine out of storage and my equipment back into my trailer.
Mad Mackie in CT:laughing::biggrin::smile: