When you ordered a big engine in a car from Chrysler, you automatically got bigger brakes, wheels and suspension to go with it. GM was notorious for expecting the customer to "know" what to order along with the big engine. More than once back in the day, I'd find some guy with a Chevy 409 that overheated, wouldn't stop and wouldn't handle. When he complained to the dealer, he was told "Well sir, you didn't order the big cooling package, you didn't order heavy duty brakes and you didn't order the heavy duty suspension package. I don't think Ford was as much of a dick about this as GM was, but I also don't believe they were as thorough as Chrysler.