Jason,
I bought a Sitting Fox French Type D pistol kit a few months ago. It is awaiting completion of my current rifle build right now. I was very impressed with the quality of the castings and wood in the kit. The barrel is a smooth .54 and is will require a bit of polishing but, otherwise it seems to be of decent quality. (I have no idea who makes this barrel.)
I have built three Dunlap Haines rifles, a Chambers Edward Marshall rifle, two ToW Lancasters, and have been to Dixon's so, I have some some data to use as comparison. I would order from Sitting Fox again, they were great to work with...
Dave