My "Beast of the East" Suntour ProCompe Ultra spaced 6 speed in my 120mm spaced 1971 Schwinn Paramount P13.
IIRC, 17-20-25-30-34-38 coupled to 50-42-31.
The Suntour 38T will fit on Perfect, ProCompe, Winner, New Winner, and Winner Pro and I believe Alpha bodies. They are not easy to find, but keep checking ebay.