Yeah, big bore kits. They exist for most of the saws. That's what I have been reference the whole time on my end of the conversation, hence the discussion of a 110 case being bored large enough to accept a 56mm piston, unlike the YD100 - etc. Also why I made the joke about calling it the "Spooky 99"
Wolf Creek is the first place I usually check for saw stuff. Price wise they tend to be one of the better ones and they haven't let me down yet. I have seen cheaper prices for the kit, but without the caber rings that are included in this kit.