Have a set of Viking DA shocks on the rear of my roadrunner made a world of difference over ranchos. Went from 1.39-1.44 60' time to 1.37 all the time. 3900lb car and driver.

Also have a set on the front of the white 65. Awesome adjustability can set up to leave with the wheels 3" off the ground or 3'.

I highly recommend the product.