Exhaust for KZ900

Does anyone know where I can get a new 4-2 Exhaust system for a 1976 KZ900. It currently has an old 4-2 system on it and the ends have rotted or rusted out and upon pulling out the baffles, they are all broken and busted to pieces. I was just going to weld them back in until I pulled them out and seen how bad it was. I have a very decent set of 4-4 originals but this is not the bike I want to put them on. Any help would be great. They also must come from somewhere that ships to Canada. Thats the problem I am having. I don't like anything at z1 enterprises has, and no one else I found will ship to canada.

the only 4 into 2 set-up that is really available is the mac system that i know of . mc distributing has it they have two different systems. they are a ditributor up here in canada and deal a lot with the older bikes and have a lot hard to find stuff and they seem to be pretty good to deal with.