'72 Challenger original owner

I ordered this in Oct. of '71 after I couldn't find a 340 shakerhooded Challenger, so I ordered this from my Dad's friend that owned a Dodge dealership. It was ordered as a demo car, it came with 11.5-1 compression and 3.91 rear end. The drivetrain is dated April of '71. <300K miles and is my daily driver except for 1 year restoring it from ground up in '95.