1972 Ford Mustang Mach I {R-Code} ~ "Feared by Mopar or Falafelled'

Jarlaxle said
The 1972 "351HO" was a Boss 351 with a point and a half less compression.
Click to expand...

Also,

* Different 'Mechanical' Camshaft.
* And the 1972 '351 HO' did not have Ram Air like the 1971 'Boss 351'.