Sorry if this has been covered before.
I planned to use a PK50 (the early type, NOT the XL2 type) fork in my 50 Special from 1976, with the old style closed rims and poor brakes. I see that this will require extensive work on the mudguard to make it fit, and also lowering of the damper.
The new idea is to swap over the PK hub to the old fork, which will give me 10 inch "open" rims and better brakes. But will this work "out of the box", or will I end up with other issues?