Big Blocks and Handling

What are you talking about? do you have a picture? The whole window system or what?

And engine setback would be relatively easy. The firewall on my duster is practically begging me to move it.

Removing the cranking mechanism from the window,plus all unnecessary items inside the door and rear side window areas. Then the windows get held up with a snap and strap system like you might see in a track car.

You still need the window guides/tracks to keep the window square in the opening.It's a sneaky way to lose weight,kinda like aluminum bumper brackets :)