OK,Guys need some help here. I have a COBRA 85,want to put a 99 Electronics Lil.Pre.Amp.in it.The radio only has Vol.and Squelch.Anyone know if it can be done if so who can do it? The radio was a 23 chan.now it is a 40 chan.The reason i want this old rig to run good is because it was my first radio got it new and want to keep it to give it to my grandson.I have all the paper work on the amp.Just looking for someone that can do it RIGHT FOR A GOOD PRICE.73s.RAY.^can not stand it^.