AM radio static

Of course my radio doesn’t have the trim screw under the base plate. The thought of removing the radio after all the work I’ve done in this car is making me sick to my stomach. But yes my goal with this car was to re-create a late 60s early 70s hot rod and I wanted to use the a.m. radio as I remember it as a kid. My parents never owned a new car in their life and for my entire life living under their roof they never owned an a.m. FM radio in their car. To play my regular music I will use a Bluetooth boombox in the backseat but for the look and theme of the car I am sticking with the a.m. radio, single speaker in the dash. I’ve gone through great length to achieve the look of hot rods from when I was a boy. The photo of the condenser on the coil is great, what condenser would I use for this application? I am assuming that the trimming screw is on the front of the radio and needs to be removed from the dash. It is a circa 1964/1965 Plymouth Barracuda /valiant/ radio. It actually says Valliant on the face. I believe the model number of the radio is 222.