Don't worry about " too much spark output "
Magnetos put out huge sparks at high RPMs
and the plugs don't weld themselves to the head, turn funny colors, or do
MSD or Mallorys are great for early cars, and standard fare for racing
cars. For the street, you want reliability, not some finicky brain box that
requires constant attention.
Modern cars have excellent ignitions, some tweaking will improve
performance. Avoid " bargain " parts, they are no bargain. As for plugs
I've used the Bosch Platinum plugs and recommend them, especially for winter
Change fuel filters frequently, a partially clogged filter can confuse
the computer, and masqurade as
an ignition problem.