In my recent searches for parts, MailMan had shared a link to HVC Cycle ( hvccycle.net ) where he secured seat foam and cover for his XS2. I secured a new dash plate here for my XSB, but I also see where they offer these badges for $42.50 each. I cannot attest to their quality but thought I'd share my findings.
There was also a member here that made replicas of these badges out of pewter for very reasonable price. I don't remember the member's name off hand but am sure I could find it easily. I bought some and was happy with the quality.