Challenge of the week! 4″ or 4.5″ bolt circle?

I present to you all your homework for the week.

This is the question... did my 1973 Plymouth Duster originally come with 5 on 4" or 5 on 4.5" brakes? Here are the materials you need for your assignment...



Here is a cheat sheet...

Click here to decode the fender tag...

Bonus points goes to whoever correctly states the size of the rear drum brake wheel cylinders that is supposed to be in this car.

Ready... set... go! :-)