hi, might as well, pull the trans out and do it right . its a lot easier!!!! the shift forks have to be on the sliders to get side cover back on. they have to be tilted toward top of case to get side cover to go over them.also, before tightening the side cover down, shift trans in to reverse, this will make sure the interlock will clear each other. also, test trans for shifting , before installing in car. just food for thought.