sorry to hear about your mother Barry, it is a difficult time and our prayers are with you, i lost my mom to cancer in 82 and know your sorrow!
now Ron, for that engine mount on the upside down mount so you can raise the carb, ive been thinking and wont that raise the thrustline on the shaft and make it impossible to mount a cowl(if you want one)?? just thinking again[&:]
antennaman, that zinger 14x6 will work fine and you may just like it, just watch your speed on the downline or you may over-rev the 91 and injure your cam lobes

the plus about the zinger props are they are lighter than the composites.