The 102 in would be my recomendation always. I run a 102 with a Galaxy 88 10/12 meter radio. It is converted to 11 meter (CB). When you install the antenna make sure the SWRs are set. You do not need 18 feet of coax, don't let anyone tell you you will. I run 9 foot, have a reading of 1:1.2 on a antenna analyzer. I also run a yeasu ft100d on that same 102 inch whip. (not at the same time). As to old radio, nothing wrong with them. Get it cleaned and tuned up. hope to hear ya on the airwaves