Cuda M Code Date Coded Rad Hoses??

The places that came to mind when I read your post:

Roger Gibson/Frank Badalson

Restorations by Julius

Jim's Auto Parts

Bill Rolik Enterprises

BradsNOSMopar.com

ECS Automotive

Glen Ray Radiators (not sure if they have hoses or not)

They may not have the correct hose per se, but they may be able to point you in the direction of who does their stampings and you may be able to help you out. Good luck with your search.