I called the owner of the model and got a little info. He didn't know the size without grabbing a tape and taking measurements. There are cutouts in the bottom for retracts and the model doesn't have any finish on the wood. I'm liking that part, it'll make it a lot easier to move forward with a finish. I'm not an expert on the different versions of the BA, but after looking at 8178's build thread and the pics on the image site, it certainly looks like it has a lot of BA traits.

FB