Belt size - Cobra - Aftermarket supercharger pulley

[2003SILVERGT]

Belt is starting to shred on Cobra. I'm just wanting to make sure I'm getting the right thing. I've found a few different sizes to go with.

I have a 2003 Cobra, 2.8 upper pulley on the stock Eaton. I don't know if this effects belt size, but it also has a Steeda blower belt tensioner.

Will 73.5 work? I'm getting a few different measurements on different sites.
I already have a 73.5 on its way. The sooner I know, the better.

This is the tensioner...
Cobra Blower Belt Tensioner (2003-04) 555-3340 - Free Shipping!

 

[timspony]

With the Aux. pulley....I'd think you'd need a 74" belt...worst case you buy both belts and return the belt you don't use!

 

[2003SILVERGT]

Will do. Thanks.