440 in a body radiator

22" inch opening in the cowling, All A bodies have a 22" inch opening. In B bodies the GTX is 26", or any B or C body with A/C is 26". This doesn't apply to your car. if you want to get the car going, use any 66-69 B' Body 22" radiator with a 383 or 440 application. it will bolt into the dart, and has the correct outlet for the 440 engine. The 22" GTX radiator in 68' was a three core radiator, 383's frequently were two. If your going for a lot of power, this radiator may or may not cool the engine adequately in a warm climate., It would be a good idea to recore any original radiator you Install.