[Dark_5.0]

I have done alot of weight reduction.

Aluminum heads
removed rear bumper
removed front sway bar
removed power steering
removed all a/c components.
rear end vibration dampener. (aka...dog bone.)
fiberglass hood.

I have also added weight.

sub frame connectors.
drive shaft safety loop.
heavy @ss electric fan
3 core radiator

I have went as far as I am willing to go with weight reduction. Some people remove all of the sound deadening material and front bumper and get a tubular K-member etc...