My boxster is a street car that was race car inspired. Losing weight was the easiest way to make it go faster and I believe I took 250lbs out of it. No carpet in the trunks, insulation, stereo, Miata battery, lightweight seats, Chinese headers, custom made exhaust using a 987 muffler, no rear bumper support, manual top, deleted airbags, GT3 center console, and the rubber trunk gasket. I had to put the front one back on as it helps the frunk pop open. You can see it all on my thread but you have to use google chrome because all the pictures were used with Photobucket. There's an app on chrome that gets around photobucket's block.
Woody's build thread