i've changed a few belts, but none on something so cramped together, I can barely get my hands in there, I'm going to have to take off the bottom plastic and go from underneath and finish it on top

I know where the tensioner is and how to route the belt, I just can't get the thing off, there is so much stuff in the way I can't get in there, looks like I need to take off the whole upper part of the engine, or reroute some fuel lines

I'm trying to change my drive belt on an 04 matrix xrs, how did you get to the tensioner? looks like i'm going to have to take off half the car, re route some stuff or something, anybody had any luck with this?