Hello Dolly welcome to fun, before you spend your hard earned cash !
What sort of awning do you want ? have you a roll out awning fitted already more of a sun shade, if not you will have to fit an awning rail.
Then its how high does it need to be, and how long.
Will it work with the door, and do we want one that we can drive away from.
Don't just go buying anything, go and see Peter @ Johnscross or go to a meet or rally and speak to people that have them, its easy to buy things you thought you needed, we still do it. Bob and Janie.