Originally Posted by Fat Boy

It's going to depend on the tubeset. The S3 stuff that I've seen has a teardrop top tube and an oval-round-oval downtube with slightly different buttings than the OX. Weight difference is going to be really small (a few ounces), but with the OX, you can use lugs and the S3 stuff that I've seen is oddball shaped, so you can't.

Is this enough of a non-answer?