Mufflers for 4 into 2 KZ1000

Does anyone know of a someone manufacturing original looking, replacement mufflers / silencers for the 77 KZ1000 A1. I currently have the original 4 into 2 system. The mufflers are beyond their use by date while the header sections are still in reasonably good condition.
As I don't need the full system, if I can get mufflers, either replacement or original in good condition, I will cut the old ones off and weld replacement ones onto the pipes.

Go to www.z1enterprises.com and get their phone number. Call them and ask to speak to Jeff, the owner. If ANYONE knows, he will. I suspect no one makes replacement mufflers but full systems are available (I think).

del