Heres my other boys Puch frame. Its standard.
They take a standard bottom bracket. Had cottered cranks on it. The headstock is slightly larger diameter than normal, but not upto oversized...er size.
The seat pin is 22.2mm. Ive got a BMX seat pin in there.
The original wheel size was 451mm 20 X 1 3/8". Chrome rims on single speed.
Had weimmann alloy sidepulls..730 and 810. With the thin alloy brake levers
A mattress saddle and chrome roadster bars.
Had full mudguards too.
I would sell the orange bike and the red frame.
But would just be hassle, probably have to post it somewhere.
Dont know how to do that