7 1/4 or 8 1/4 Highway gears

shipping wouldn't be over 75. tops I can send a 3.91 center any wheres in lower 48 for under 86.00 I do have a 7 1/4 rear end out back but do not know what gears are in there
it was in a 65 barracuda with a 6 cyl , and a manual 3 speed if that helps you find out what gears came oem in them . rainin here should be snow so I'm not going to pop open to look until you know what set you want