How much does 25% UNDERDRIVE PULLEY KIT VT II-VZ 5.7L 6.0L V8 costs? And what does it consist?

The price for the kit is $340 delivered. We can set up an auction for you if you wish. If comes with a tensioner and idler pulley, belt and underdriven balancer. To give you an idea as to the gains and installation process, please refer to the youtube clip in the link below:

https://www.youtube.com/watch?v=kLKfYFXpqGI