Guys, I need some help with getting manual control on my 200-4r. Its still in the building stage and all apart. I have a shift kit from Dana at pro built automatics, its the sk200 kit upgraded to the heavy duty shift kit by his standards. I made it clear to him that I wanted full control, downshift any RPM, hold any gear etc. He said I have to have a valve body with the letters AK or AJ on it, which I do, and thats the one that I need to hold manual low.