Have used the search button, but no one seems to be able to direct on what shock to use and what needs done to fit.

Anyone?

and yes i know GF does the kit.

I can tell you its part numbered MAL-601 shock, that zul_cbr uses. You could do a search here for the R6 shock, that seems to fit and I did buy one myself as an upgrade, not fitting till the winter comes in though.

The MAL- 601 shock is 280 mm between mounting eye centres from memory - think you will find that is somewhat to short for optimum use on the NC29 and way off for the NC23 Tri Arm.

The 931 code shock is far better suited - a change in spring rate is also required to suit the rider.