70 Duster 340 Bilstein Front Shocks

Hello Everyone
I’m looking for a front set of Bilstein Shocks for my 70 Duster. I believe the part number is
55-R082 the problem is parts suppliers don’t recognize this part number. I think this number comes from RCD. To add to my problem I’m in Ontario, Canada finding a Canadian Supplier is a challenge.

Does anyone know what 55-R082 crosses over to in the Bilstein system? Also does anyone know of a Canadian supplier?

Thanks for your help.
Stu.