The 67 has a rifled bore, the 67 smoothbore does not.
67
13, which is the difference between the highest and lowest numbers, 67 and 54.
67 - T17, D8
54 degrees
If you subtract zero from 67 the difference will be 67 so it is true.
67
One key difference was the engine. The 66 VW Bug has a 50 horsepower engine and the 67 had a 53 horsepower engine. The late 67 VW Bug suspension had an integral sway bar in the rear.
48 degrees Celsius
134 is twice 67, so there is 67 between them.
0.008 (rounded to 3 decimal places)
13 hours 45 minutes 6 days 67 seconds