Dang, I wish you were my neighbor! Judging by your garage I suspect that we have a lot in common. Aside from the obvious car choices, I see you have an R1 (I had a 92' FZR1000 amongst others) and I'm a Nicky Hayden fan as well, God rest his soul. I still get a lump in my throat any time I think about him.
I'm also working on
something of a light weight build, but being that I have a 96' NSX-T I have a bit further to go. When I first got it, it weighed 3132 lbs with a full tank of gas and the last time I weighed it, it was 3026 lbs with a full tank of gas. Most of the weight loss was from the exhaust (SOS headers and cats, J's-Racing titanium muffler), SOS 275 clutch/flywheel, Foundry3 titanium targa brace and Foundry 3 engine mounts. A significant portion was also due I'm sure, because I had removed the spare as it didn't fit with the Foundry 3 titanium front brace I added. Unfortunately, I gained some of the weight back with the Tecnomags and wider tires* I got for it, but I think I may have evened that out with the Sakebomb Garage AP Racing BBK.
Unfortunately, unlike you I arrived at the realization that a 16/17 inch wheel combo is better than a 17/18 inch combo for unsprung weight and rotating mass a bit too late as the aforementioned BBK negates having a 16" front wheel. I imagine that a 16/17 inch wheel and tire combination is probably better overall given that the car was originally designed for 15/16 inch wheels and tires.
Once I fit the Sakebomb Garage rear BBK I plan on weighing it again and next up will be a light weight battery and very likely the mirrors and rear wing. It's great to read that you lost a good bit of weight there and I was not aware that the OE bits are pretty heavy. I just want to make sure I find the best rear wing available and would appreciate suggestions! I like the Spoon mirrors but I wish the base of the mirrors integrated with the doors a little better visually.
Anyway, as I mentioned above, I wish you were my neighbor buddy...
* In my excitement with having found a clean-ish text of Tecnomagnesio wheels I never bothered to ask how
wide they were and got wheels an inch wider than I preferred.
That of course meant wider tires, so my "light weight" magnesium rims are heavier than the Mita 7S wheels that were on it...