[Redog]

When I was young and stupid I put the Bosch Platiuum +4's in my Alero. It ran about the same and started maybe a split second quicker, but it started misfiring really bad. I almost traded the car in of a GTO in Dec 04 becuase nobody could figure out what was wrong.

I bough the ACDelcos and it runs the same.

In fact I bought the wrong plugs for the Delta with the engine swap. (ACdelco R43S and I should have gotten R45S) They are just standard plugs for $2 a plug. I bought the ones for a 1968 455 motor, not the 1968 350 motor. I bough the right plugs, swapped them and the car ran a hell of a lot better. The motor started making that struggling noise when I got on it.

MPG is better with the new plugs too, from 9 mpg to 13 mpg