The spark plug wire two over from the timing belt looks like it isn't plugged into the coil.

I would worry about where that intake is going. With the condition of that engine I would worry more about not getting water in the intake man than any performance gains you will receive by a colder intake.

With the condition of that engine you better go ahead and replace that small section of heater tube that connect to your thermostat housing. Older hoses in this location tend to leak which will lead to you overheating your engine and warping you head. Not to mention leaving you stranded roadside with a big bill on the way.