I'm trying to figure out if my 05 has the stock tensioner on it. From searching the vendors a little I'm getting 2 different sizes for stock. 2.5" and 3". If anyone knows, or if you have one and can run outside and get a quick measurement for me I would appreciate it. Also, if it's a stock tensioner with my 2.8" pulley, how can I be sure what belt it has on? I just want to get the 3.25" supercharger pulley from south florida (that's the brand that's on there now), and get the pulley as close to stock as cheaply and easily as I can. TIA

 

Ill sell you my stock press on pulley if ya want.

 

my stock idler was 2.5" the stock super charger pulley aprox 3.3"

 

I don't feel like going through the headache of installing a press on pulley. I've done it on my gtp and it kinda sucks lol. Spaz, when you measured the stock pulley did you do it from the side or take the belt off and go off the ribs? Looks like they have a bigger pulley on mine if you measured it from the side which is good. That way I can just get a stock one and get the 3.25" supercharger

 

I measured it as best as I could with a caliper on the top of the ridges where the belt rides.
I think there is a thread here somewhere where it says the actual spec size.