here is what my car looked like:
 
you kind sort of c how my muffler is...it sticks out a little farther than the bumper but its pretty much rests against it...i didn't c any heat damage to the type j...but i have just recently put an avenger kit on my car...and i dont want my muffler to warp the bumper or ruin the paint....will it get too hot and mess it up?  or bc it stick out  a little it should be ok?  
and if it is touching the bumper...will that mess it up?  should i drop it a little?  i dont want it too look stupid, but i don't want the bumper or paint messed up
thanks
 
well my drift kit, it use to sit on the bumper on one side.  i thought i trimmed it good but it just barely touched the muffler.  when the car was running and i was a traffic light, i could hear the bumper rattle because of the exhaust was causing it to vibrate.  over 2 weeks or so, it basically just trimmed itself up from the heat.  if its possible try to get a cut around the bumper
