my cub started blowing white smoke, while mowing a roadside, i figured a blown head gasket, like the other one did, so i got one and pulled it apart, found a cracked block, which looked like it had been there awhile, the p o had to know it, it runs from just in front of number 1 piston back past number 2, i must have just finished it off, im done with cubs, there just not enough tractor for what im doing,that's 2 cubs with 2 engines down on the same piece of ground, im already in this one at top money, everything including the tires is new, or rebuilt, its a 1958 model had a woods mower and a 1 bottom plow with it, a friend wants to buy it but in this condition i dont know what to price it to him, any ideas? for replacement i plan to stay with at least a super C if not a good H