I meant they will probably need to be a tensioner between the crank and PS and not so sure how easy it would be to fab it.
You cant run two tensioners. . Are you running a/c? Simple test would be to buy a belt and see how it acts. There might be enough tension on the belt with the one stock tensioner.
Not necessarily another tensioner.... Another idler pulley. I tried the AC bypass belt and it throws without an idler pulley on it. To much movement on the belt at 6,200 rpms. And I don't want to get the pump, install it and then find out it wont work without some sort of idler pulley. I was hoping someone had done this already for "proof of concept".
