115 vs 120?? We talking a turbo here because the primary mill for the Monte Carlo's at that point was the 305. Now I cheerfully concede that there is a lot that can be done with a 305, the lose it and go BBC or LSX brigade not withstanding. Still I do think that the stated top speed in mph was more of a factory affectation that anything those cars were truly capable of, fresh from the dealer floor. And I do stand by my contention that the 88 Monte's were leftovers from 87. Whether Myth or Myth-stake, it makes more sense for the factory, which was already tooling up to go front wheel drive, to tweak the leftovers rather than do a last year/one year only that would, I agree, keep the lines and plants working but, would extend the conversion time needed to rework the lines to handle the front wheel models.
Nick
Nick