[Chaplin]

Rob-
I too am using a 66 428 for just the reasons you described. However, I was doing some research this afternoon and from what I have been able to ascertain, I do not think there are any emissions requirements pre-1968, someone please correct me if I'm wrong.
In 1967, Congress passed the Air Quality Act which gave the fed. government the authority to set certain clean air standards for all states. The federally mandated emissions requirements became effective in 1968. Therefore, if what I have found is right, pre-1968 NJ did not have any established standards for the sniff test and, therefore, a pre-68 engine may not even be subject to the sniff test. A PCV may be all you need. Passage of the Air Quality Acit may explain the significant jump in 67 to 68 that you were referring to. As for the early 70's, I know there was a significant change in requirements from 74 to 75 with the advent of catalytic converters.

I am going to try and contact someone at DMV to find out what the emissions requirements are, if any, for pre-68 cars. I'll let you know what I find out.

Also, let me know if your SPF taillights have an SAE or DOT number. If they do, I'll buy a set from SPF.

Mike