might as well buy a tranny and swap it, rebuilds on h22 trannys cost about 900 in parts for all new synchros/hubs/rings/bearings, etc.
you can get a used h22 tranny for less than that, you can even get a used JDM LSD equiped tranny for less than that.

as far as an SH goes, i dont touch those, and with good reason, im sure if you do your homework you could find a way to use a h22a tranny on your SH, but honestly im not a fan of ATTS.

~kris