Stand in the middle of any S model back to 2002 and open the boot and get your feet to close to lift something heavy out of the back and you can definitely feel that heat... ive felt it when i got too close on our 05S, but not actually burned thankfully... the Alta protrudes further than the stock, but well, it sounds better
Sounds like that was what was reported here... ouch...
"THE 50 INJURIES REPORTED IN THIS INVESTIGATION INCLUDE SIGNIFICANT SECOND DEGREE BURNS CAUSING BLISTERED AND SCARED SKIN AND ONE INCIDENT RESULTED IN A THIRD DEGREE BURN."
http://www-odi.nhtsa.dot.gov/cars/probl ... pe=VEHICLE