Re: 1966-81 Chevy H/J Series
My 1970 Chev MHH 90 has hydraulic clutch linkage. The MH 9500 GMC had mechanical linkage in 1973.
2 early types or styles of 2 3/8" guages , till last year or so of Brigadier production size., then they used universal 2 1/8th
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