I am not associated with the OP in this post, but wanted to post this up for anyone looking for some lightweight drag wheels.

FS: 18x9 Kosei drag wheels with tires - MBWorld.org Forums

18x9, 17lb Kosei Wheels w/ MTs mounted (he states about 50% tread left).

He is asking $700. Just thought I'd share the info over here as well...