[2001 ZTS]

I've had a UDP for a year and a half with no ill effects. The dampening is nice but not a neccessity from what debates I have read and there have been many. I do know the stock crank pulley is massive and heavy as hell, I was shocked by the heft of it.

As for SVT snorkel. There are advantages and disadvantages to the each of the different types of aftermarket intakes. I can't see any disadvantage to the SVT under any circumstance so the increased inatke area can only help. It's one of these things where you'll get a few more HP but not a miracle. The snorkel is best matched to the bottom half of an SVT airbox but the stock one can be hacked as well. I run mine with a K&N panel.