Bit of a background: 1995 Disco1, 149k miles, runs ok except for the price of gas. problems pop up ever so often, last major repair was broken catalytic converter (very loud), there are some leak but my garage thinks it is just normal for LRs I love driving my machine, it has a sort of aura about it. I do want to upgrade the original radio, very loud craking sounds on AM, FM is ok but the sensitivity is fading badly. I have metal ant, do you think I should switch to a rubber ducky and new radio?