I've got a 87 IROC that I swapped to the serpentine setup on, only to find out I needed all of the smog parts as well as the accessories. I got sent the parts from a 89 350, and I can't figure out where the big hose goes that connects the driver's side and passenger's side AIR tubes together with the diverter valve. I have it routed so that it works, but it seems far from optimal, and isn't in the same shape the part was when I got it, which I assume was baked that way from sitting on another car.

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Edit: Second question, if I run this rubber hose behind the engine like my old steel pipe was, will it hold up to the temperatures back there?