I estimate my 1973 914 has ~340K miles on it's chassis.
I have to estimate because a few years after buying the car, I pulled the speedo out and discovered "EASY AUTO WRECKERS" written on it's backside. So much for having thought I bought a "low milage" car with only 60K miles on it
PPI kids PPI !
From what I do know about it's engine history:
1.7L/4, 125,000 miles(SWAG)
2.0L/4, 31,000 miles(SWAG)
2.4L/6, 185,000(actual)
total = 341,000miles