94Formula/TA

i don't want to get too obnoxious with this but my car needs to cut the fat. I'm ditching the air system when my longtubes come in but can you think of anything else that isnt too important. Here is my current list.
!rear seats
!front swaybar
!air pump
!jack; spare tire

This is what im thinking of doing
!air
!heat
!sound deadening material

Anything else? Is it possible to remove the heater core and such or is it not worth the effort?

Rich