Complex sentence: The most memorable would be the 1964 GTO was supposed to be equipped with disc brakes which were even tooled for free by Kelsey Hayes, and radial tires were supposed to be offered but were killed by Cole as well.
Split into simpler sentences: The most memorable would be that the 1964 GTO was supposed to be equipped with disc brakes, which were even tooled for free by Kelsey Hayes. Radial tires were supposed to be offered, but were killed by Cole as well.