Try and help you a bit if I can mate.
The first numbers are the wire guage  24 in your case
The second numbers are the number of turns of wire  900 in your case.

AFAIK the last couple of numbers relate to something like the type of lug on the coil.
Anyone can correct me on this.
But with my theory a 24-900 coil is a 24-900 coil and is interchangeable.

Hope that helps a bit.
Cheers,

yep


try looking at the FL 11630  and the FL1 11630   all it is the lugs
i am sure I have 24-900 -3  but really use a 24-900

mark