Hey everyone. Just got my first Benz, 2001 E320 wagon with 264k mi. I’ve had other European cars- numerous Saabs, a 98 Volvo I lost too soon in an accident and '16 Jetta tsi. It’s a nice one owner car but there appears to be a fair amount of deferred maintenance and TLC stuff to tackle. First thing will be transmission service. Advice? Is it straightforward to change stereo back to OEM?