too bad it's got steel rims...legend has it that there are a few of these odd-duck Schwinns with 650B wheels that can be a cheap donor of alloy rims for people wanting to try a 650B conversion. I've never come across one, yet, but always take a couple looks at any Frontiers I come across...does this Mirada you speak of have 650B alloy rims? Any other models that do?