I'm missing something here. Whats up with late flathead Y pipes ? Seems
all you can buy is the long right side. Nobody carries the short left side.
I got a new right one from Napa but had to fab the left. Oh F6 1950.
boy aint been that quiet for ten years new muffler tooo

 

Long right side = $ short left side = not so much $

 

I'm not familiar with the pipes but could you use the long on and cut it to fit? so making both from the one...

 

I have bought them before. Several repro places carry all the exhaust pipes. I haven't looked this year tho.