I installed the RK12963 retrofit kit on my Winn filter separator several years ago on my 1998 Monaco Dynasty 8.3L. The kit modifies the existing 90S1230C assembly by using a new Racor S3230P filter element, adding a new metal bowl on the bottom of the new filter, and adds a new high quality water probe which threads into the metal bowl. It took me about 1 hour to do the complete retrofit myself. It keeps your existing reprime assembly. I've been happy with it. I've found the Fleetguard FS19592 filter element as a replacement for the Racor S3230P, as its easier to find and cheaper.
1998 Monaco Dynasty
Scion Xb
Collin and Alfie the dogs