Does anyone know if they changed the air con system fitted to the classic Impreza at any point?

I've come to change my air con belt, and the supplied belt doesn't look like it'll go anywhere near fitting, its just too short. When i come to refer to the technical manual I've got, my tensioner is in a different place, and looking at pics seems to confirm this. It looks very neat if its a retro fit, and the rest of the parts all look like the standard ones..

Has anyone got any engine bay pics that show the belts/tensioners? Need to source a new belt, hottest time of the year so far and I've got no air con!

 

It seems that mine is an aftermarket coolair system that was fitted on lots of Imprezas. This is the shape of the belt I need..





Has anyone replaced one the same and know where to source a belt from?

 

don,t think thats a coolair kit!
i have fitted a few of them and they weren,t like that!.
possibly another retro!