Wow that's thick.
Notice any difference in handling, turning, etc?
i had these sway bars on my car before, and my impression is that they're too stiff for street use. the 1 inch diameter dali bars, i believe, are designed primarily for track usage. while sway bars will reduce body roll (thus inspiring more driver confidence), if too thick they will actually limit the benefits of an independent suspension and reduce overall grip.
i actually posted a thread about how i felt my car was "pushing" or felt like it was sliding out during a turn, check the discussion here:
http://www.nsxprime.com/forums/showthread.php?t=28495
read specifically the post made by Chris from SOS. he felt that my swaybars were too thick; sure enough he was right. when i removed the bars and went back to stock, the car felt more stable, especially over uneven and rough surfaces (where i drive around in LA, this is a problem). with the bars on, even when driving straight on the freeway, the car would somtimes "jiggle" uneasily when going over not-so-even pavement; when i went back to the stock bars, this problem was gone.
for street use, a thickness between stock and 1" is probably the best compromise, imho. but i think the "proper" way to limit bodyroll is to tune first via stiffer springs and dampers, and then to fine-tune the balance with the right sway bars.
oh, i still have these 1" dali bars, so if anybody still wants them, PM me and i'll sell them for cheap