the 318 is a dang tough motor, you have to keep an eye on a chrysler transmission, and the interiors were cheap for a while but our 96 Ram 1500 has 240,xxx miles and the only we have done is a water pump, about 100,xxx of those were HARD miles too.
On the flip side i have a 86 Chevy C30 with 140,xxx?miles on it on its 4th motor.
I had an escort with over 300,000 on it and it is still going (odometer borke at 298,000 about 1.5 years ago)
My DD is a 360,xxx mile Festiva (but it is mostly a Mazda)
Our Crown Vic has a conservatively estimated 500,000 with nothing major.
If you really want to do Ford Vs Chevy, I would talk about how the Crown Vic is the most commonly used Taxi and Police car(although the Caprice was prefered by a few over the Crown Vic) How the Fseries is the best selling vehicle ever made, How the Ranger is the choice truck for companies (WAS the choice truck). Talk about the Bailout, or you could mention the million mile 7.3Ls(but they were International). You could talk about how the Mustang GT 350 whips up on Camaros with a smaller engine and "old" style rear end. Or how Ford changed the car game with the use of assembly line, made cars affordable to average people, changed vehicle desgin forever with the 1949 Ford and the Taurus. How ford released the Ranchero and inspired chevy to build the elcamino, same can be said for the Mustang and camaro. Maybe even mention how the Foxbody Mustang made us want fun cars to drive and started the second muscle car era. Or how the Mustang Gt 350 did have "quality issues" forcing the assembly on new cars, like the ZL1.
It is all in how you word you arguement. If you need help (and decide to keep this topic) let me know, a few of my friends are chevy guys (Which lead to me beiing a Ford guy, plus dad worked at Ford in Dearborn).