1989 ford cargo 2421 cummins engine with zf gearbox

Hi everyone. Could anyone help me to know what clutch kit would work on this truck? The original one is double kit but most part dealers are telling me that the truck model is too old for its parts to be found on their database. Maybe someone would be knowing which type that would be compatible with this one. I have attached some pictures for reference. Please help me if you can. Thank you.
Alfred

Truckfix clutches in Cleckheaton advertise in Vintage Commercials as specialising in clutches for elderly preserved HGV. They appear to be very knowledgeable with satisfied customers. I put someone on to them a few years ago and he was pleased. I have not used them myself.

Thank you very much for your help. I have locatrd the company from Google and sent them the inquiry. Hopefully they’ll help. Any other contribution would be very welcome.
I wish you a happy weekend!
Alf