I picked this bike up off cl last year for $35. It was pretty rough, but the 25" frame size and length was perfect for me. I’ve been wanting to make my own restomod bike for some time, and this seemed like a good candidate. Never been able to figure out the year and model, but I suspect it’s a 1975 model 731 or 732. On the bottom of the frame it’s stamped “31 400”