Somebody downsized my boat to a 36" YS and I know they made a 42" which came stock on it and the 33RH. I'm pretty sure they also made a 40" because I saw one for sale when I bought used winches a few years ago. With a 36, 40 and 42, I'd bet money they also made a 38" but I've got no proof. FWIW, the 42" is the biggest that will fit on the standard pedestal without lifting it for clearance to the deck.
The YS pedestal has a one inch non-tapered shaft with 1/4' key that will take any matching wheel hub. I added a used 48" wheel from Bacon's consignment shop in Annapolis that has no mfg name on it. Just a little less nice than the YS I took off but not noticeable day to day. Bacon's usually has a bunch of wheels in the shop and not on the website. I'm going in there soon so let me know if you'd like me to check what they have. Can't be to expensive to ship. You can also check other marine consignment shops, Craigslist and Ebay which is what I did until I found my 48" locally.
Mark