Okay I have an old Garrett Freedom Ace Coin commander.I am wondering if any one knows,will the early crossfire coils work with this?Can not find any info on older Garrett coils.The screw on connections look right?No idea on frequency either?Sure would be nice 6 inch ,10 and 4 inch crossfire coils can be found,if you look hard enough.I have had this machine since the mid 80"s.My old coil has cracked. Would love to give her new life.