I've been wanting to get some new wheels for my prelude. Not necessarily for looks, more for the convenience of having two sets of tires. I was looking into light weight 15" wheels to run autocross with, but then I realized that getting smaller wheels bumps me into a harder class in AutoX. I'm now looking for lighter but still stock size wheels (16"x6.5"). I don't want anything too flashy, and I like the stock look. I was looking into prelude SH wheels, but they're even heavier than my stock ones (~19.1lbs to ~19.7lbs)

Then I realized that I could get OEM Acura RSX wheels. They're the same size, and weigh less (15 or 16lbs).

Does anybody know if they will fit? I think they will.
Does anybody know the exact weight? I can't find it anywhere.
And, does anybody know how much they usually run for?

Or can you suggest any other possibilities?

My friend with an RSX is getting new wheels, so this might be a local (no shipping) possibility pretty soon.