[NoDOHC]

The charcoal canister line typically runs to the port near the oil fill on the engine. I could get you a picture, but my one car is far from stock and the other is covered in snow.

The vacuum bias line on the FPR is required to keep the pressure that the injectors see constant (linear injection quantity at all manifold pressures). Because the bottom of the injectors see manifold vacuum, the effective pressure seen by the injector is rail pressure + manifold vacuum. If the rail pressure remains constant, you will see a very rich idle (9 psi vacuum + 42 psi fuel pressure = 51psi). SQRT(51/42) = 1.10 = 10% increase in fueling at idle.

As Ted said, anywhere after the throttle plate is good. I connect mine as close to the actual injectors as possible, but it doesn't really make a difference.