in regards to the sparkplug thing...i used a tr55 i pulled from a tune up, and old spark plug wire and cute little low glow switch...worked great for scaring little kids and tailgaters...i may do it to the bird... hence firebird

-drill like a 3/8 hole, then use a 9/16 punch to roll the lip some and i think sparkplug threading is 3/8 NPT, so just find that specific tap (remember NPT) bout as simple as shooting flames out your tail pipe gets...