The Great White Brick - '69 Valiant
If you look closely you'll notice this pan was from a Dart, which has a longer wheelbase. The extra length is a section attached to the rear of the pan, just before the rear seat hump. We carefully drilled all the spot welds and removed this section. The area circled in red is the area I'm talking about.
I'd also like to thank the poor blue donor Dart for donating its life to rescue this one.