Serpentine belt

[Menace]

Yesterday,I had the serpentine belt replaced on my 99 Jeep Grand Cherokee LTD. 4.7L,deep slate pearlcoat,k&n fipk,borla exhaust equipped. Belt was beginning to slip and had signs of wear. $100.20 parts and labor.:coolman:

[MAD-3R]

Not a bad price. Thought about puting underdriver pullys on it? What does it run in the 1/4? OHHH a superCharger.... yeah.