Jim I'm not sure what size it is. Just looking at the physical size of the head it's in the 1.20 range. But that's only a guess. I lost by best flying bud a while back and I just recently cleaned out his shop. This was in there. I don't remember him ever bringing this to the flying site so I am in the dark with any knowledge about it.
Selling in the forums is against RCU policy but you can PM or email me if you have any interest. [email protected]
Thanks for your input. The MVVS glow engines I've seen were real screamers. I figured the gasser was the same.

David