In the world of C-body B/RB plug wires, there are some subtle differences year-to-year. My '66 Newport had 90 degree plug boots on most plugs, but our '72 400 had the famous 135 degree boots on #7 & #8 plugs, which took extra care to not break. Earlier years had straight boots on #6 and #8 plugs, with the snap-on white plastic insulators that snapped into the valve cover brackets.
In the Standard Motor Parts website, they have accurate illustrations for each of their wire sets, so you can wee what is what for each set.
The wires I've been using with great success on everything I have were the Borg-Warner Cool Wire wire sets. Prior to that, the Sorensen Mono-Mag wire sets. Both are the magnetic suppression wire with the spiral monel center conductor. Less resistance, but quiet radio reception (maybe a little ignition noise with the hood up). Last set I got was about $25.00 at PepBoys. Now, they are "BWD" brand rather than Borg-Warner.
Whatever works for what you're trying to accomplish.
CBODY67