Not much different than a longarm. Barrel & lock placement & trigger fitting is the same. Haven't encountered a book solely on pistol making, but Alexander's "The Gunsmith of Grenville County" has a chapter on pistols. As expected, it's a bit short, as the rest of the book covers details on most of the work required.
If the stock is preinlet, you really have few choices left. One thing I would urge is to not leave a lot of wood on the stock. Most kits & commercial pistols leave way too much wood; eg, the forestock should taper to a feather edge against the barrel. And the CVA grips I've seen are too fat; a little slimming will help. It's hard to describe, but many originals have a taper line extending from the rear of the lock to the middle of the butt. You draw a line from the lock to the butt, sorta centered on the grip, then file either side leaving the taper line. Gotta have a good half-round rasp for the inner curve.
Don't know if this helps, but good luck.
