I read on gnttype that the trans must be unbolted from the engine in order to do the rear main. However, after reading some threads via the search feature, some people say all that needs to be done is to remove the oil pan and bearing cap. IS this true?? id like to make this as simple as possible. also, where can i get a new oil pickup screen for the oil pump?? Does the oil pump need to be primed after this? or is it just startup afterwards??