1. Hagerty Insurance Agency: Hagerty specializes in classic and antique car insurance.
2. American Modern Insurance Group: They offer customized coverage for antique, classic, vintage, collector, custom, exotic, muscle, or special interest vehicles.
3. Grundy Insurance: Another company known for providing vintage/ classic car insurance options in NJ.
4. Antique Automobile Club of America (AACA): AACA members can access auto insurance policies through their partnership with American National Property & Casualty Company.
5. Progressive Insurance: They provide customizable classic, collector and high-value car insurance coverage.
Please note that it's always best to shop around and compare quotes from multiple insurers before making a decision to find the best coverage and most competitive rates for your older vehicle. Also, consult with local agents of different insurers to have detailed insight regarding insurance options for older cars within New Jersey.