From Shayne Laws

Effective January 18, 2016 – The following is a Track Rule that will be implemented by Caraway Speedway, Dominion Speedway, Greenville Pickens Speedway, Langley Speedway, Motor Mile Speedway, Myrtle Beach Speedway, Southern National Raceway Park and South Boston Speedway.
This Track Rule will be used in place of the language defining travel limiting devices only, in Section 20F – 12.1 Coil Springs / Spring Mounts / Jacking Bolts in the 2016 NASCAR Whelen All-American Series Rule Book.
All other language in Section 20F – 12.1 will remain the same as defined in the 2016 NASCAR Whelen All-American Series Rule Book.

Travel Limiting Devices

All downward chassis movement while the race vehicle is in competition must be limited only by the normal increasing stiffness of the springs.

As an option, one (1) Track-approved front suspension travel limiting device (bump stops, coil binding, etc.) per front wheel may be used.

Vehicles with coil-over suspensions will be allowed an external travel limiting device. The mounting hardware must be made of metal and be mounted in the same location as a shock would be mounted on a conventional (big spring) type suspension and mounted with ½ inch diameter magnetic steel bolt and nut.

Mechanical travel indicating rods may be used.

Remote adjusters for the travel limiting device will not be permitted.

Current spring rules and sway bar rules will be enforced.

Current shock absorber rules will be enforced with the exceptions of the following two items. (1) The suspension travel may be limited by the shock absorber when travel limiting devices such as bump stops are used on the shock absorber external shaft.

(2) The 6 inches in 90 second rule will not be enforced due to the fact that some competitors are shortening the shock absorber bodies.

Height rules such as frame height and fuel cell height etc. must comply to the current rules but will only be inspected before qualifying or before the race. Heights will not be a post-race inspection due to the time required for the race vehicle to return to its normal static height.