They sold me a double compression fitting that does not require flairs for both 3/16 and 1/4, along with a foot long line of each size to go from the MC to the old line.
1946 1/2 ton - 1962 "261" 1953 1/2 ton 5-window - "235" 1955 1/2 ton - 55 "265" Corvette motor 1959 1/2 ton Fleetside - "283"