Cam drive belt is an obvious choice, how many miles on that engine or belt?
the coolant passage shown seems to be filled with *gunk*, that should be flushed out before the engine goes back into the car.
the oil pan gasket appears to be weeping around the crank seal.
Have a good look at the insulation around the downpipe that keeps heat of the right front brake pipe. Because of where GM routed that line it can get exposed to heat from the downpipe if the insulation has deteriorated. Heat = expansion in the line = the right front dragging.
Given your location I suppose that you don't get exposed to salt, what is the condition of the heater inlet piping down on the frame rail near to the right wheel?
You could also pull off the plenum & inspect the vacuum hose that feeds the FPR from the MAP sensor, after 26 years it more than likely is not in the best of condition. The short vacuum hose that connects to the trans modulator could also be replaced, the injector harness was/is protected by split-loom, now's a good time to replace it all as it will be hardened/broken up sitting in there all in pieces (assuming it's never been replaced). All of the rest of the split loom around the engine could be replaced as well.
any coolant hoses that can be replaced could be done now. The rad hoses are still available, but the rest are not, the short vertical bypass hose under the throttle body is easy to replace from a piece of 3/4" heater hose as is the hose at the coolant pump manifold.