Ok heres the deal. Ive been supercharged for 100k miles. the other day the car started making weird noises. basically the idler pulley and the two small bearings are toast. The belt looks horrible. so heres some parts you can buy to address maintenance in future.

Idler pulley is made by dayco and can be purchased at advance auto parts for $28.99
pn 89017

Belt can be purchased at autozone. this belt is not as good as the dayco but so far I can not tell difference. Length is exact to dayco and its 5rib. NO cutting involved
Duralast pn 820k5 $15.49

small belt bearings below and back the tensioner assembly
NSK6001v
you can order nearly anywhere. if you get desperate you can order from McMaster Carr PN 6001-2RS $8.73ea

feel free to add to the list. Maybe this helps some people. I know for me it was a relief sourcing some of these higher wear parts.

 

Thank you for taking the initiative for this post!

Bumping to add to the list both part number AND donor vehicle description wise.

The drive belt auto tensioner for the Kraftwerks kits are off of 2003 to 2008 Dodge Ram 1500s with the 5.7L Hemis.

Part Numbers as following...

GATES 38382

ACDELCO 38382

DAYCO 89325

CONTINENTAL 49374