Lightening Tricks For 68 HDT Dart

so i was thinking that it might be cool to start a thread for the budget people to lose weight! post ideas of how to lighten your car the...
...cheap way

1. lose window regulators for straps like the old ss cars
2. take out heater system
3. take out rear seat and brackets
4. drill small holes in the "frame" like the goats "lightened" pkg.
5. cut out centers of doors (rusty doors)
6. lexan windows from homedepot (12bucks a sheet! enough for a window

so what else can u guys think of?