i have a 1987 2wd f150 with 4.9L 6 cylinder. I need to replace my 3sp w/ overdrive manual trans and would like to know the different types i can use. The manaul has three types, Borg Warner T-18, New Process 435, Ford TOD. I dont' know which one i have and have to look at the trans. And could other tranmissions work from different engine types and years. Thanks