I totally agree with you about the fast vehicle not being practical/fun on public roads. That's why I imported a Honda CBR 250R (MC19) from Canada(Canadians imported it from Japan). I'm sure if you pay attention you could see some in daily traffic, I will never have that pleasure. 19,000 RPM, 4 cylinders, sounds eargasmic, makes decent power, and I get to use the GEARS!
I love tiny engines!
Especially when they rev high. Fuel economy is fairly dissapointing though, and 4 carbs is a massive PITA!
As far as not being able to remember how you got introduced to Ecomodder, I was on the same boat until recently when I remembered that I found Ecomodder when I looked up something to do with grams per mile of CO2. There was a sticker on a side by side I had that talked about the emissions system (which came apart in less than 200 miles
), and I wanted to learn more.
Anyway, on to your car. An easy improvement for you would be a kammback. You mentioned in your car's profile that you removed a spoiler, you could cut up the spoiler and use it as a basis for a more aero spoiler/kammback.
Another issue I saw aero wise with your car is the severe hood/windshield angle, something you could do to help "reduce" that angle would be to make a panel like a wiper deflector, so that angle isn't so sudden.
If you are worried about legality/get tired of the disabled power steering, I believe there is a manual steering version of your car, so you could just swap the rack over.