Just about all the complete bikes came with one piece cranks. The redline profile crank and the hutch crank being the most popular were aftermarket add ons. They came with their own bottom brackets that used press in one piece bearing cups. I was pretty seriously into these bikes in the 80's and most people who were use to buy the frames and build them up with quality aftermarket parts. Right now 80's bmx and freestyle bikes are hot. If it were mine I'd change the brakes to the appropriate dia comps and ask $500. There's a lot of collectors snatching these up.
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Semper fi