Flame Kit

I have been restoring a 1983 chevy truck. I have a 350 in it with an Edelbrock 4 bbrl. It has dual exhasuts with heads and no cats. I wanted to put a flame kit on it that would shoot flames out the tail pipes. I was wondering a few things though. First of all is it possibel. can a spark plug in the exhaust ignite the unburnt fuel. Do I have to do anything to my timing or adjust the carb so it runs ritch to be able to do it. I also wanted to know if my design will work. I got it off the internet, I just redrew it. See attachment.

thanks, RedRider