I have used the 81 up boxes before and only changed the valves at the back where the hoses go. This lets you use the metric lines and your pump -no problems. The valves are the backing nut where you screw in the lines. No adapter fittings needed.
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69 Chevy short fleet side soon to have LT1 and 4L60E pb. ps cruise and air.
68 Chevy short fleet side 400 sb 5 inch chop top pb. ps. pw. 350 auto and shaved handles
68 anniversary no engine long wheel base 400 auto FOR SALE
68 Chevy fleet side long wheel base complete parts truck.
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