Got an rsx in the shop, it has the sidemount peakboost manifold. I see two ways to do the downpipe, but I wanna see how they did it. Anyone with some pics, please?

 

Lots of peakboost build threads on clubrsx with pictures. Also there is a DIY: Full Race turbo install thread with lots of pictures on clubrsx. The full race down pipe is close enough to the peak boost one that it should give you a general idea on how it looks installed.