If you have chassis currently, stop by Pure Hockey in Cherry Hill, NJ (right over any of the Philly bridges). I do most of the rivet work there.
If you don't have chassis currently, it may be tough for you to get a hold of a set before then. I'm not 100% sure but I think the Hi-Lo patent expiring has something to do with not being able to find those chassis anymore. You can still find Labedas on some sites, but I know we're all out of roller chassis currently as a company.