the reason i say it's not worth converting to manual is because of the upper tranny mount (stated above). as far as i know place racing is the one place that makes that mount for that conversion.
i find place racing to have the crapiest of crappy mounts.
if you are willing to do the conversion. drill out the spot welds to where the mount bolt to the frame, and buy a new piece from honda and weld that on.
i did the auto to manual conversion, and it's not worth the time. not hard but still not worth it