Hey, im new to my 07 mustang gt and it has a Saleen supercharger. I got under the hood and measured a pulley that is about 4' 1/2 inches long, isn't this a little big? what is the stock size? also my engine bay remains hot after a drive of 7-12 mins for 3-4 hours after the drive. like the entire engine may is hot is this normal or is there not enough air circulation under the stock hood?