With some measuring you might find a substitute. Check this site for more info. It deals with roller chain. Gathering chains already made up might be a little more difficult to find. http:__www.renold.com_Support_ChainInformationCentre_Chain_Standards.asp
Did you end up making a change or buying metric IJ We bought two chains but need to replace more chains and at nearly $700.00 each it adds up in a hurry especially when our corn went 100bu_acre! Thanks for any suggestions.