Ultimate Boxster S HPDE Project

[j.fro]

Carbon fiber hood
fiberglass trunk lid & clamshell
fiberglass front fenders
lightweight flywheel
swiss-cheese the bumpers & fab lightweight solid bumper supports
Ditch all the heat shielding underneath & put vents into the rear bumper
scrape the undercoating from the car (or acid dip the body$$$)

I don't know what state inspections are like in TX, but in VA the windshield has to be glass; Lexan doesn't pass.
Also, it's gotta have working windshield wipers, but you can ditch the washer reservoir and pump.

Aside from removing the door airbags, getting weight out of the doors is tough if you still need the car to be able to sit through a rain storm or drive in the winter. I've thought about ditching the window motors and rigging up some sort of strap/pull system or just building slide-in side curtains (a la Speedster) but it's going to take some fabrication.
FWIW, my car is about what you are describing and I'm at 2600# & 250RWHP
I've got cheap headers, fabspeed pipes w/ 100 cell cats welded in, and a pair of 2.5" single chamber imitation Flowmasters. I reflashed with the Softronic product and there's no CEL. LWFW, 74mm TB, and filter/MAF sitting outside the engine bay where the tunnel housing the snorkel used to be round out the engine mods.