since no one individual seems to be able to throw out a correct answer to the question.
the columbus police department sent quite a few caprices to indiana to have the engine transmission and rearends replaced 5 years ago. they were not replaced with stock units. the were replaced with higher hp engines, thougher transmisions and good rearends. now how many mile have been put on them since i couldnt tell you. but the rest is a hard fact.