Do you mean limiting the cpu to 245? You should be able to do that with setcpu on any kernel, even the stock leaked, although that may be too low for the sense 2.1/3.0 roms.
Na... It's not too slow at all. I've run my Tbolt down to 24MHz on gingerbread with sense 3.0. I usually run it at 122MHz because some things just don't work well below that with a locked screen.
Lou is still around. If the OTA looks good he might work on it. I haven't gotten the idea he's a big fan of gingerbread though.