i think the same thing would happen if more were out fitted with the 427, katech, more perf. and others can do the same thing but of course its not a chevy backed gmmg car. the 69 02 zl1's that were built had that documentation of being 1 of 69 units built as was in 1969. people then also installed the 427 in their cars, but bought the engine from the dealer or an other source. as far as the vin#'s go on those 69 02 zl1's designating them as 427 cars i don't know about that. maybe someone can explain that.
