Interesting discovery inside 318

A good friend of mine bought a good running 70 Nova, thrashed on it for a few years, then sold it to another friend.
When the motor finally needed an overhaul, it was tore down and had dished, flat and domed pistons, with both hydraulic and solid lifters on the cam.
So it was basically a parts motor, that someone threw together out of left overs, that actually ran good, and lasted many years of thrashing.