Hi Tom,
This is the us link
http://rencoolusa.com/dc-products/ i'm not sure what they cost... If I do it I'll just build one... not that difficult... My holdback is my alt size it's pretty wimpy... Could run on hyd but more issues and trouble.. Heading up the Mt in the am.. wish me luck.. on the down hill side.. I'll be in behind the slowest truck! In loading up found I need more room.. the little lady has filled it up for a two day trip..
Regards,
Jimmy