Shift improver kit

well today i took my trans pan off my 904 in my cuda to replace the gasket and filter i believe the gasket was leaking. anyways while i was getting the gasket/filter a friend sugested why not get a shift improver kit. How hard are these to install, could i do it myself i have no experince in transmissions at least i knew how to drop the pan so the fluid doesnt pour out :lol: do i just drop the valve body drill some holes move the ball thingys around. where can i get a good directions to installing a kit, id prefer to find something online apposed to paying for a guide :toothy7: ? i did search but couldnt really come up with anything