Got these for my 72, 240 z Datsun. Had replaced the points with electronic ignition. Stage 2 cam, higher output alternator. In new wiring. Change in horsepower and power was immediately after I replaced my in cagey blue plug wires with these MSD 8.5 MM.
I also change my plugs to the V power, And opened my gap from 36 to 44.
Highly recommend these wires, they are worth the price if you can if you have done a few electronic modifications to your engine.
Bought these for an older tractor, needed longer ones to do the job and this set hit the bill. Were very nice to make and easy once you get it all figured out. They work good and look great.
Nice set of wires look extremely well-made only issue I have is that the lettering is not permanent The white lettering will smudge off during installation if not careful