Change transmission fluid but stick to Ford Spec (e.g. Ravenol MTF-2), use premium Top Tier gas, catch cans (might keep valves clean, might cause increased crankcase pressure) (there can be two; PCV and Crankcase), Water/Meth Injection - cleans valves and more power, Paint Protection Film (PPF), Rubber Floor Mats, Dead Pedal, Trunk Liner, proper wax or ceramic coating on paint, proper cleaning procedures, break in the engine, transmission, brakes properly, potentially bigger oil filter, swap out the diverter valve and one step colder plugs if you go with a tune. I also like to watch the temps, ign corrections and OAR on the COBB AP so that could help spot a problem. I also put laminx on the fog lights as they are known to crack, not sure this will stop it from breaking in the event of strike, but it should hold it together. If you do this you have to use LED's the halogens will burn the laminx.