WTB...Original Sage tube to fit a 9132-4 spey rod.
A 9132? Never heard of that one are you certain of the size?
I just bought a Sage tube through Anglers Workshop for a 9140-4 I built. I paid $56, Sage wanted almost $70.
Also try Bob Marriott's. Look under Rod Building in their online catalog. They have both cordura and aluminum tubes by Sage.