Replace with 2 47uF 450V electrolytics, which probably will be 105c versions as that is the most common, and they will be radial. You probably will be able to fit them under the chassis, and because they are low ESR you want to connect a 10R 1W resistor in series with the positive leads, so that you do not blow up the valve rectifier from the current pulses, as the old ones would have an ESR in that range in any case.