Propeller Help

Hi all again. I have a question regarding propeller choices that I could most definately use some help with. I am currently finishing up my Cox powered tether car and have mounted the engine already, my shiny Babe Bee. For a picture I put on a yellow safety tipped 5 x 3 prop and it looked great. Just a few minutes ago, I was looking at it and thought of something. The car in question is in a pusher configuration, with the engine facing backwards. I had my prop on in original configuration... As far as props go, I have a small mix of traditional propellers for the engine and a couple of left hand props in 6 x 2, but no pusher propellers. So, to run the car and engine, can I use my regular RH rotation prop put on the engine backwards, and then run backwards, or the same for the LH prop, on backwards, run opposite of normal? I am not looking for an all out speed machine, but just something fun to watch go in circles.