Any difference between 1950 Custom / Deluxe ?

[Green&White]

A couple of newbie questions as I am shopping to buy a '50 Custom 4-door like my Dad had from 1955 to '59.

1) Any difference Custom and Custom Deluxe ? if so, what ?
2) Did the 3-speeds all have overdrive ?
3) I have only a couple of B&W photos of my Dad's car. He says it was like a Camel brown, Any idea which of the original colors that would have been ?
4) what color would the dash have been?
5) What would have the original upholstery have been ?
6) who are the "goto" guys for troubleshooting and restoration tips in the 49-50-51 Fords?

Finally, anyone got one like this to sell? My Dad's serial was B0SR158374, Anybody out there got it ? Gotta be as close to original as possible. Not looking for resto-mod.

Thanks