B2200 Specifications
Tranny info is on there. As far as I know nobody "makes" a shift kit for the mazda tranmissions. If you know where to look though you should be able to find different solenoid springs and if you drop me a post on my site on what you want the tranny to do in different gears I can go through my books and figure out where you need to make modifications. All you should need is a wide assortment of small sized drill bits and maybe some aluminum spacers or something that can be easily cut to make a spacer.