Would somebody tell me where i can get a super charger tensioner at for a 96 ssei and how much of a pain are they to change

Auto Parts Fast at RockAuto has them. The price isn't to bad. But changing them is a bit of a pain.

I think they are pretty easy to swap out. The tensioner is part of an assembly. If you remove the coil pack bracket and a couple of nuts IIRC it'* off and the new one is on with those same fasteners.

Hardest part is usually remembering to remove the pullies before removing the tensioner.