Hotchkis bars are hollow. I honestly don't expect much of a difference, if at all. The 22mm hollow hotchkis RSB should be close to the equivalent of a 20mm solid--similar story with the 25mm hollow / 22mm solid FSB. The biggest difference will come from me actually installing the FSB to match the RSB this time rather than just letting it sit in the corner of the garage. #lazinessfortheloss.
Mike got me with the "I only have one set left", so I caved and ordered them, lol. If I had thought ahead I would've bought 'em earlier and gotten in on the group buy (and the group buy price