May read "sixtimesseven" users contribution as he did replaced the mobo with any newer. But requires any HW tweaks to get the screen & touch-panel working.
The newer WM / SDA uses Intel Desktop Board D865GLC as have 2x SATA connections. Using latest BIOS. Still on EBAY available.
As running 3GHz 800FSB and 4G BUT SINGLE Core on BIOS!!!
As for SMA/BNC adapters, there is a SDL model may from "sixtimesseven" as 12 >> 14cm fan adapters for industrial Noctua model.
1M input adapters are still high prices at Ebay... but seams no way. Any active probes as missing/lost most required connecting pin's.
For cloning boot with CD-R and have the new SATA SSD connected, while the target must be always the destination HD connected to the mobo.
The mentioned RDriveImage7 comes as free for trial but helps to not destroy / touch the original MASTER!!!
I had some bad experiences with 3D printing & shipping from the know Asia land (see my pictures on this forum) as wrapped and broken, while the finish of the 3D printing gets sand blasted. So my next will be any more expensive as 70$US as went for black printings. So ask for pictures before shipping
I have also some PATA/SSD but as SSD SATA 128G any on next PC shop.
YES, waiting for a STL model as dual USB supported adapter for 1/2 sized Floppy (slim model)
BTW: the time decoder is usual a first target for exchange. Alps or Bourns brands only as cheap for an xxkUS DSO brand