exhaust flames

[66StangGuy]

im shure all are tired of people asking about this but i was just wondering if i have this setup right. coil connected to spark plug in exhaust pipe. switch and lead wire to coil. easy stuff. ok now does it matter how far the plug is from the end of the pipe? whats the best distance? im guessing 4-6 inches or so? also i have seen some people rev the engine high and then turn it off and hit the switch. i dont want to have to do this.. what about dropping the engine into first while in second causing it to go high rpm and using the engine to slow the car. does this cause a rich enough condition to shoot flames? only reason i wanted this is because no one else at my school has this and i think it would be cool to have when the ricers stop at the light next to me. thanks for anyone who replies. and if you dont because you think this is lame and you have ben bothered by too many people asking this i wont blame ya thanks again.