I installed SPS performance spark plug wires and Bosch Platinum +4
plugs about 20K miles ago. Everything seems to be working fine, but I
realized recently that I never checked whether or not the plugs and
wires were resistively matched. Also, I'm fairly sure that the plug gap
is different from the spec.

So:

1. If I haven't been noticing any problems with radio RF interference,
should I stop worrying?

2. Should I change the plugs for Platinum +4s that are gapped to the
spec?

3. What is the typical replacement interval for a plug wire? For plugs?
The wires have a "limited lifetime warranty", and the plugs have a 100K
mile replacement interval, I think.

Thanks,

Ted
1996 Black-Gold SC2