Somebody (not pointing any fingers)should map this time line out so it could be a cut and paste. Lol.Those narrower closer to J-Bass pickups you're seeing on some Dingwalls are the original Super-Fatty pickups. IIRC it was sometime around 2005ish when they became available. Super Fatty pickups in that format were used on Super-J and Z series (I don't remember seeing any Prima Artists with them though), and Sklar signature basses.
You'll note that there's rectangular shelled Dingwall pickups that are the same dimensions as the Barts, those are the original shells for the FD1 and FD3's. They too lasted until sometime around middle of the two thousands before the ends of the pickups became radiused. The radius is a design change rather than a spec change in that the pickups are still usually FD-3's, or now FDV, and P-Tone.
...at some point in time they also stopped branding the pickups the same way. The originals say 'Dingwall' in large font across the whole pickup shell while later ones have the branding smaller and in a corner.
You'll also see some Dingwalls with EMG shaped pickups. They were used on the earlier runs of Combustion & NG import models as well as the ABZ, though now they're all the same 'modified' Bartolini dimension shells with the curved ends.
There are a few more differentiation points as well...again in the mid 2000's the pickups went from being 2-lead to 4-lead pickups. That meant you could easily add parallel/series switches for each pickup. For a while the guys were pulling their pickups open to desolder the spool leads to do this as a DIY mod. Probably better that the shop decided to do this (then denoted as FD-3-4L). Many of the basses that were built between 2001 and maybe 2006ish came with the pickup coils in parallel by default.
I've had one bass with Bartolini's in it...my Voodoo Prima (dates to ~1993), it was one of a handful built with perpendicular rather than angled pickups and the barts are actually 4-string shell sized. To me they're a different sound. Not a bad one, but a different one. And as someone who'd had several other FD-3 Dingwalls I decided to change out the pickups. It was a head scratcher and after a big Sheldon realized that it had 4-string sized pickups in a 5 string...and he kindly found a set of the old rectangular large-logo pickups in the shop. To me they're a bit wider-smoother sounding without some of what was coming across as mid-snarl in the Barts.
Also, note that not all basses use the same size shells. The bridge pickup for my Super-P is longer than the regular 5-string FD's that I have.
add a few little details like there have been some primas with the SF shells, the RARE FDVs with exposed pole pieces(maybe prototypes? That were in a gold AB1 5 string @MDBass perhaps had , the switchblade system that I think made it into about 12? Basses. The different pre amps and such, the blue cube, Aggie, glock 2 and 3 bands, DG, what else am I forgetting?
I guess it could be aged with different woods apex’s throughout the years no longer used. Bubinga, walnut necks, mahogany....
the cello hip and how it popped up for a couple in the last few years.(NAMM and flotsam and jetsam IIRC)
Side note: the pick up vary in size from the medium to long scale due to the 19mm to 18mm string spacing when comparing a 5 to a 5
Lol. So is SOMEONE writing all this down for the newer dingwall members in the group. I know between a solid group of members here we could come up with a pretty thorough dingwall archive
