shower kit

I'm trying to do something nice for my dad and update his shower fixtures. I know it's a Moen kit that is currently on it and I know I have to stick with Moen. But I've never really messed with anything like this before. My question is, how do I determine which model I need to get? I have...

Hello, We are replacing our shower head, handle and faucet. However, our diverter valve is currently on the shower handle. We can only find sets with diverter valves on the faucet at our local hardware store. I can't even find many handles with diverters on Amazon. Would it still work if we...