Our 94 GT just turned 50,000 miles. Everything under the hood is bone stock as is the exhaust. With so few miles, Im wondering if I should bother with plug wires and a coil. I replaced the air filter, hoses, and belt when I bought the car, but everything else is 21 years old. What would you recommend for plugs, wires, and a coil? What should the timing be set to? How do I clean the MAF without damaging it? I would prefer to stick with Ford parts, I have never had good performance with parts store replacement tune up parts.