I have never seen a superbug with a 1300DP, only our standard/normal (beam) 1300.
Yes, the 113- 4th with 0.93 ratio was from the 70/72 1300 bugs,
before they went for the 002 style gears.
Don't see many though!(probably seen 5 total in 20 years)
Way more in the 002 style though, in both "1300 twin port bugs", and of course L-Bugs.