1965 scrambler fork question

[Scrambledeggs]

Hello! New here. I was gifted a 1965 CL77 scrambler turned into a chopper in the 70s. I know that might cause some to stop reading already, but it was done tastefully and is such a blast to ride. The issue I'm having is the original owner seemed to have just put some metal tubing into the fork uppers between the spring and top of the tubes. It worked for years but now is leaking fluid, I found a set of new seals on ebay and replaced them, still no luck. I'd like to just replace the fork with a springer, so I'm asking you fine folks on this forum if you know the sizes headtube, bearing size etc I would need to source out the correct springer fork. I'd even consider a custom made one if I have too, I really like this bike and want to save it and ride it. I will include some photos. Thanks so much in advance

Sam in Florida