Fuel lines should be coming out of the top of the tank on the passenger's side. If the car is an '88, the other fuel line is a return. MAKE SURE YOU TAP INTO THE SUPPLY, or you'll have problems.
Oil pressure gauge is fed on the driver's side of the engine, down low, up front by the timing cover. Some of the cars with mechanical gauges even had a hex shaped "extension" tube coming from the block, to make room for the big bell shaped sender.
Holley RED???? I doubt I would run my lawnmower with one of those. That little red pump only puts out about 7psi MAX @ 65GPH if everything is 100%, which it usually isn't here in the real world. IF you're making any kinda horespower, that little fella won't keep up. If you can afford it, at least grab a Holley Blue and a regulator.
Hope this helps you out, Good Luck!
