The AOHB system looks just like a Hydrovac system except it used compressed air instead of vacuum, so the MC and it's linkage are the same either way. The AOHB Booster is also smaller in diameter that the Hydrovac Booster.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD