I've stripped everything non essential out of mine, doors skins, ABS, stuff behind the dash, lighter 16'' wheels, kevlar seat etc.
Unfortunately can't give you a weight but as I've literally just bought some corner weighting scales I'll be able to tell you in a few weeks.
I'm going to guess though or at least hope i'm between 1000-1100kgs.
There's a couple of threads on here about this and a couple more on Hondas-on-track.