first off, i did use the search button and my question was partially answered. i rebuilt the nose drive of my genII trd 3.4l s/c and i want to finish off the rebuild with the bearings behind the gear drive and the needle bearings at the back of the case. does anyone know if you have to drill out the back of the blower to remove the old bearings and have the new bearings pressed in? i plan on having a machinist press in the new bearings as is. second, can you purchase the rotors like you can purchase the rebuild kits? finally, is there any special trick to get the rotors seated back in the case (like lining up gears and teeth and such)? I don't know much about the rotor assembly as i can't find a picture of one. thanks all!!!