Bill,Idaho

Probably one of the easiest ways to determine what series it is would be to look at the radio mount, or I should say see if it has a n MT1029 or the newer radio mount. They are easy to distinguish one from another. The MT1029 mount does not have three terminals facing up in addition to the ones that plug into the radio when it is installed. If the radio mount has terminals facing up, it is the new SINGARS compatible stuff. The other way to check is what speaker does it have? If it has an LS454, it is the VRC (RT 524,RT246 era). If it has the newer PLASTIC speaker, then again, it is new style. New stuff is cool, but still almost too new, as I believe finding the proper radio is the problem.