The pictures I've seen of Hartson's buggy look like standard V2 shocks.

Don't be hungry for big bores. When running for TQ I had both shocks and tested back to back on many tracks and in many cases on the smooth tracks with high traction not only was the feel better with the smaller shocks but lap times where just a little better, so depending on the jumps, and the way a track was this was more of a tuning option but in many cases I ran the smaller bore shocks.