For those rear stop/turn/tail lights, best to ID the manufacturer and get their LED version. That way the holes all line up, you can seal them back again, and you know your lighting is compliant with motor vehicle codes.
For indoor lighting, do what you want. Mix, match, swap. Maybe even clearance lights... but the main ones, nope. Get legitimate replacements.
Our Class C uses Bargman. They offer kits to replace the incandescent with LED within the original housing. LED elements plugged into the original light sockets. The sockets were much of the reliability problems we were having. Also, the kits added up to more than the price of full replacements. The replacements go hard wired to the coach, eliminating those problem sockets.
Eastern Marinehas a lot of trailer and RV lighting products.