I'm getting the same reading you are getting. This explains why I was kind confused looking at these coils. I did not think lower than the 5k range was going to be a thing but so far three 4ohm range readings.Yes, I hope so too.
I don't remember what the reading was on my Patriot Super Ferrite but I do remember being surprised at the low number.
I had previously guessed that most pickups were in the 10-11-12K ohms range.
I think the first pickup I ever checked was a used Model P Dimarzio.
and, yes, the maple/rosewood neck on your 1st Gen Fury came off of an '87 3TS Fury.
That '87 3TS Fury body now has the all rosewood 32" Warmoth Warhead neck on it and a black pickguard (I need to take a better pic of this bass...you can see a stock pick of that bass before I took her apart for @58kites and I
) project...