Unless the car is an NCRS car I always recommend replacing the coils and wires when doing a first plenum pull or if they have never been done. Aside from mileage you have the issue of age. Our cars are 25-30 yrs old. Who knows how many start/stop cycles it gone through even on a low mile car. Why take the chance. AC Delco coils are still available and a new set of AC Delco replacement wires can be found as well, largely on ebay running about $75-$100 set. If you drive the car regularly it’s a minor investment in reliability.
H
