Replacement radios

Here is the amplifier module. There are many different variations out there, just search on ebay.
https://www.ebay.com/itm/TPA3116-TP...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
Also, here is a FM radio module....
TEA5767 FM Stereo Radio Module for Arduino 76-108MHZ With Free Cable Antenna | eBay