Ridetech OUT, 4 link Watts-link in.

[Mark@lateral-dynamics]

If you can weigh the car, by all means it is great data. But it's not really critical, you can estimate the CG height and fudge a typical 53% front weight bias. The numbers won't be perfectly accurate but it's good enough to see the changes when you go through the range of link locations. I personally feel it is far more important to consider the "SVSA" for link-stick axle rear suspension systems. Making it short and high off the ground will result in an increase in A/S but to the detriment of very hard braking (potential for wheel hop, just like the NASCAR into the hairpin at Sears Point), or under heavy throttle corner exit on rough courses/roads. 100% A/S means that the suspension is effectively "locked up" under full throttle, which means that the springs and shocks do nothing to soak up the bumps, which means the car can/will scamper. Note also that A/S is ONLY a condition when torque is applied, if you are just cruising down the road under light throttle it doesn't come into play and the suspension will react as you'd expect.

Best of luck, you'll get it.
M