Ones off the older Valks will work if you don't mind chrome. Lots on eBay.
I'm going the other way on this bike. It's one of the "older" Valks ('01 I/S). Timing belt covers, valve covers and engine guards, saddlebag mounts, transmission covers and a number of other things were powdercoated gloss black last year. This year will see a spare set of bars, upper and lower fork tube covers, the lower fork covers, caliper covers and the peg mounts get blacked.
Already found a salvaged clutch cylinder in great (usable) shape...figured I'd throw out a request here before ponying up the shekels for a new one from the 'Fish.