Reading your posts above, I'm not sure you got this tidbit, but if you switch to a transmission mounted VSS, you will no longer have a speedo cable. The Integra speedometer and odometer are driven by the same VSS signal that is sent to the ECU.
Getting the old, cable driven speedo gear out of the transmission can be a pain. The assembly tends to bond itself in the transmission. Given it's location, removing the transmission from the car would make the job much easier, but that's probably not an option. At least take off the rear engine mount bracket.
Don't forget to remove the little retaining tab first. Heat (i.e. a propane blowtorch) should help. Aluminum's an excellent thermal conductor, so you may need to leave the torch on that general area for a few minutes. Trying to pry upwards on the retaining tab slot generally just breaks off chunk of aluminum that comprises the top of the slot, but it may save some time once you've broken things loose.
Yeah, I read about it being a pain to remove the old cable VSS. I think I'm going to try and tap into the gauge cluster VSS if possible and maybe forget switching over the cluster and going to tranny VSS. It seems that they give the same/similar readings anyway, as long as the supermid can read the output from the stock gauge cluster VSS