Jim,
you got me there...don't know of a Spridget with 2 wheel cylinders except for the front. I put my late brake plates on, complete with all the brake parts sans tappets, and tried the hubs I have. I Bugeye set, one '68 set, and one '73 set...they all fit well with no interference. It's close and once everything is torqued down there may be a little rub. I do have interference between the E clip and the axle and will replace them with circlips.
Rut