Ride is too harsh

I have to say that I completely agree with Steve (autoxcuda).
Biggest changes I've made that has effected harshness are shocks and tires, in that order. At the same time I disagree with the impact of the rear leaf spring rates being nearly as important. I'm current running 200 #/in landrum asphalt track springs, and combined with the spax shocks, a passenger can actually hold a cup of coffee (although not recommended). That was just about impossible with the KYBs even with slightly softer real leafs and front t-bars.