I have an old CVA single shot pistol I built from a kit. It's not bad, functionally, but it's not up to the standards of the other guns of that era, either in terms of design features or quality. I also have old T/C's and an old Palmetto Armory, and they're just plain nicer guns in many ways.
CVA was a purveyor of some of the cheapest blackpowder guns. I bought them at some predecessor of the big box store, Best Company, I think. I do remember passing on their revolvers "back in the day." I think they came in blister packs, or some of them did.
Given that the 1860 or the superior 1858 Remington made by the vastly superior Uberti are available for around 250 bucks brand new, it'd better be pretty damned cheap. Parts are available from Dixie, though off-brand parts are harder to get. And they're not free, either. I'd rather just get a nice new gun (and that's what I did, after trying to get parts to fit my old 1858).
A source:
http://www.buffaloarms.com/browse.cfm/2,334.htm
And of course, there's Dixie or Cabela's. Word is the Piettas are pretty good now, too. Cabela's 1860s are $210 and 1858s are $200.
Again, I have my prejudices, so take them with a grain of salt. However, I'm also on here occasionally, responding to people who think that all Italian replicas are junk. They're not. However, some are, and especially in years past, many were.