Pretty hot car ordered with the 330hp 402 and Muncie 4-speed...definitely not the typical Monte Carlo buyer. However, it sounds like the original drivetrain is long gone and the car currently has a 454 and Tremec 5-speed...along with Vintage Air, aftermarket gauges, etc, so there's not a lot of originality to revel in aside from the interesting paperwork.
Link to 1970 Monte Carlo auction