you can beat the exhaust. nothing else. good luck
http://www.epa.gov/region2/air/sip/13_20-Sub32.pdf
Q 13:20-32.20 Exhaust system; official inspection facilities
Page 24
N.J.A.C. §,13:20-32.20
(a) The following shall not be certified
1. An exhaust system in which the muMer is missing, defective,or not in proper operating condition;
2. An exhaust system if there is evidence of tamperingwith emission control apparatusin violation of N.J.A.C. 7:27-15.7;
3. An exhaust system if there is evidence of exhaust gas leakage at any point in the system;
4. An exhaust system if there is a muffler cut-out, muMer bypass or any similar device, or any change or modificationto the exhaust system which causes excessive noise;
5. An exhaust system which has loose or worn components or has been patched;provided, however, that an exhaust system which has been properly welded and is in good condition may be certified;
6. An exhaust system in which all parts are not properly mounted. The entire exhaust system shall be in w-h condition that it cannot burn or cause injury to any person. Exposed exhaust pipes, stacks, or other parts of the exhaust system which might burn a person or cause injury shall be protected in a permanent and effective manner; or
7. An exhaust system installed in a manner that any part thereof passes through the passenger compartment of the motor vehicle. The exit point for the exhaust gas shallbe located so that dangerous amounts of exhaust gas will not enter the passenger compartment under normal vehicle use even with the windows open or the outside air inlets to the heater or air conditioner open. A replacement exhaust system is acceptableprovided it is specificallymanufactured for the motor vehicle by a company which guaranteesthat the exhaust system has a safe exhaust gas exit location.
(b) Notwithstanding (a) above, certification of a motor vehicle shall not be refused because a muffler has drain holes which were placed in it at the time of manufacture for drainage purposes.
Q 13~20-32.19Tires; official inspection facilities
(d) There shall not be any mismatch in nominal tire size, construction, or profile between tires on the same axle, or any deviation from the motor vehicle manufacturer's tire recommendations. Tire tread shall not protrude beyond the fenders.