I am doing a 6.1/TR6060 swap. Front end will be RMS AlterKtion/coilovers. Rear will be a 2 link, panhard bar, airbags, and torque arm. Rearend will be a narrowed 8 3/4. I am looking at the shockwave 7000 and 9000 lines with the difference being a question of weight. The 7000 is suggested for car with rear loads of 1500# or less. The 9000 is for 1500-2400# vehicles. Any idea what the rear loads are on the typical E body?