Yes, only produced in stainless; 273 w/ 4 3/4" barrel and 283 w/ 5 1/2". Pretty rare.
For what you pay for one IF you can find one, might help justify having one made. And if you do, I'd advise against the larger frame Vaq, it's way "too heavy for caliber".
If you start with the New Vaquero mid frame, you can even make it a seven shot. Plus you get Rugers chamber indexing system on the New Vaq! You should have the 32 Mag cyl reamed for the 327 Fed Mag that will shoot both the 32 hag and 327 (like a 38/357 cyl).
You can also get the cyl over reamed for 32-20 and shoot all 3 from the same cyl; saves you the cost of an extra custom cyl. And you'll have a cyl and barrel to sell to defray the cost.
If you want to start with the large frame Vaq to convert, you can make it an eight shot. Also one cyl for all 3 cartridges.
Ruger also made a stainless 8 shot Blackhawk large frame in 32 Mag w/ 5 1/2" barrel. A little hard to find but they're not rare. You can also have the cyl reamed for all 3 cartridges.
