| I'm about to install my MS exhaust manifolds, Z1 GT675RS turbos, and Alloy Toyz downpipes, and I've got two sets of the manifold/turbo and turbo/downpipe gaskets. Here's some pictures - anyone have opinions on which ones should be used? The top pairs of gaskets came with my Z1 turbos and are very sturdy and basically flat with slight indentations on one side. The bottom pair of 5 bolts gaskets came with my Alloy Toyz downpipes and are similar to what I've always received with catback systems and testpipes. They're thicker than the Z1 gaskets and look to have two metal layers enclosing a softer layer. The bottom pair of 4 bolt manifold/turbo gaskets came with my MS manifolds and are pretty similar to the Z1 gaskets, although they're a little thinner and have indentations on one side and the opposite indentation on the other side. Does it matter which way any of these gaskets are facing when they're installed? Anyone have opinions on which ones I should use? Or does it not really matter as long as they're installed correctly? 
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