I took the .5 to the track and was happy with the mods. I used pink jato springs in front, and cut down blue HPI springs listed above. 30wt oil all around.
RCM Mike also took a look at the mod and was impressed by it. Good job on the thumbs up from RCM!
After some discussions w/ Mike, it was decided the oil could go down slightly in the F and up in the rear. I'm going to go for 27.5wt in F, and 35 in the R and go from there. I'll have to take a 2nd look at the yellow springs as well. Race weight is 1950g for my .5.
We had it to compare to a non modded .5 and the benefit of the mod was obvious. All in all I think I spent ~$35. Really I just bought the shocks and springs. I popped out the ball stud from the ofna stockers and popped it in the GTR ball end so it fit in the crt arm properly.