Nice looking gun there.
I have a Draco pistol that has the UF trunion too. I was planning on eventually converting mine sometime in the future, until I held an underfolder WASR-10 last weekend. When holding it in firing position, I noticed that I would have to use a "jaw weld" instead of a "cheek weld" in order to even see the rear sight as the stock seems to drop at quite an angle away from the rear of the receiver. Since this was a Century-built gun, I'm not sure if this is just a case of one of their legendary messed up "monkey-built" guns, or if all underfolders are like this.
Not trying to derail your thread here, but have you fired an underfolder? If so, is this "jaw weld" necessary on all of them to line up the sights? After last weekend, I'm thinking my little Draco might just stay a pistol.