Or you could so what i did ( my mileage is 46K and the super-s was 102k)
Take your original speedo and fit it in place of the old super-s clock, then take the trip counter piece out (unscrew it) from the Super-S unit and screw it into your original speedo unit.
So then you will have the trip counter from the super s in youre orignal speedo unit,
Then either cut a square hole (in the dials face) so you can read the trip counter display, and drill a hole for the re-set stork (you can use the clear backing plate that the dials face rests on as a template)
Or if you have a CG13DE you can just do a straight swap of the dials face from the super s to your car.
But if you have a CG10DE you need to either cut some holes or get a dials face from a 1.0 LX
(as the speedo faces on the 1.0 and 1.3 differ and would give false readings (1.0 goes to 110Mph and 1.3 goes to 120Mph, and the speeds are in different places);
on my 1.0, 60Mph is just past half way (12o'clock), but on the 1.3 60Mph is just Before halfway