SEMA, I have to respectfully point out that you are mistaken, and this Bill has been blown way out of proportion by North Dakota citizens. They are not introducing the idea of prohibiting alterations to the suspension, steering, and brakes. This line already exists in the current North Dakota law as it sits now:
Except as otherwise provided in this section, a person may not operate upon a public highway a motor vehicle of a type required to be registered under the laws of this state with a weight of seven thousand pounds [3175.14 kilograms] or less with alterations or changes from the manufacturer's original design of the suspension, steering, or braking system of the motor vehicle.
So this is nothing new. The bill is removing the section about seven thousand lbs, and introducing the requirement to be inspected by the highway patrol if the design is deviated from. However, "Design" is a broad term, and one might suggest that most aftermarket parts use similar "designs" to OEM, though they aren't the exact same part. Additionally, since this is already in North Dakota law, and not aggressively enforced, I feel it's unlikely that enforcement would increase so significantly as to be a burden.
Additionally, the bill states that hydraulic suspension may not be operated while driving (a good idea anyway), and that tires with a diameter larger than OEM must meet federal safety standards. It seems to me that if you're using a DOT-approved tire, you already meet those federal standards.
Regarding the requirement for fenders, the bill does add a portion that states that the entire tread width of a tire must be covered by a fender. However, current North Dakota law provides an exemption for vehicles manufactured without fenders. It states, in a later section of this same chapter:
39-21-52. Exemption for certain street rod motor vehicles.
The provisions of this chapter or chapter 37-12-02 of the North Dakota Administrative Code relating to bumpers, tires, and fenders do not apply to street rod motor vehicles. However, a street rod must have all equipment, in operating condition, which was specifically required by law as a condition for its sale when it was first manufactured. A street rod is a modernized motor vehicle which was manufactured before 1949 by a recognized manufacturer and which retains the general appearance and original body configuration as manufactured or a motor vehicle designed and manufactured to resemble such a motor vehicle. A street rod may have improved modifications
to the body, chassis, engine, brakes, power train, steering, and suspension systems either by modifying the original equipment or replacing original parts with fabricated parts or those taken from other existing vehicles. The director may adopt rules to implement this section.
It really seems to me that people are getting quite bent out of shape over a bill that they don't quite understand and haven't bothered to fully research.