Jay, I've rebuilt a few manuals and automatic transmissions in my life. The biggest 'turd' to rebuilding a tranny for me one is getting all the clearances correct for those that are set with shims. Does Nissan have a shim assortment that you are buying to setup the trannies you are rebuilding? Just wondering. Dave 1991 SE-R with 152K waiting for the 5th gear popout problem to hit me. 1991 240SX - needs more HP.