I'm not sure what exactly the belt conversion needs but here are the first 2 results from an eBay search, super cheap, and from the same place no less, so they should help with shipping:
https://www.ebay.com/itm/33482745060...Bk9SR_7MxtzwYQ
https://www.ebay.com/itm/33482732612...Bk9SR_7MxtzwYQ
You could probably do a chain conversation for the same price, but I prefer the belt.