Hello, I am changing wires, cap , rotor, plugs. Is Napa premium wire, cap rotor the way to go or should I go with NGK? Also is autolite 2924 or 3923 copper plugs best.

 

correction 3924 or 3923 for hyway driving

 

Any cap that has aluminum posts are good. For me, I always use Champion copper core spark plugs.

 

Get at least 8MM wires. Makes sure you get "oem" style cap, If not they may give one with aluminum inserts that don't hold up well. Autolites or NGK should be fine as long as they are copper plugs. 3924 i believe is stock the other one may be a different heat range.

 

Back in my racing days, I always went with Standard cap and rotor with brass inserts. They would often take a miss out that others left. Today, 50+ years on, I'd still go with brass or copper inserts and rotor. Champion is factory and they work pretty good for plugs BUT if you flood the engine, they often aren't worth much after ward. 8mm to 10mm wires are good. Make certain they aren't solid core as those don't play well with computers.