My help here will be dated and so not terribly helpful
I built kits years ago and got them through Shotgun News ads and I think they came from EMF. I have not read a Shotgun news in a long time. At the time I was building revolver kits, they had the best deals by far. That was pre-Internet. By and large the action was ready to go and the work on the revolver involved only finishing.
I built a CVA Kentucky Rifle and it was the biggest joke in the Western Hemishpere. I have seen more recent CVA revolver kits (1860 Army but with brass frame) and it is pretty good quality. (Pietta)
DGW has a good selection of kits and you can carefully select so as to get the kit which meets your needs. By that I mean that some are already blued, some are less finished. Some of the kit listings do not include the original manufacturer, some do.
My reading of history convinces me that most bad government results from too much government. Thomas Jefferson