I will let my back yard mechanic do mine...I have two to do, not shipping two to the gold coast. Their knowledge is available to us, we will get it right. Besides, 30 yrs of building motors, transmission, and rear ends, is hardly shade tree...and he works on the big rig as well...good mechanics are hard to find today, and I have a handful of them right here in my back yard. All have drag raced, all are gear heads, not oil changers...you still have to get them out and shipped and you still have to put them back in. It in house for me...you guys do as you wish, for some they would be the best choice, just not for me...besides we are doing a few other things while we are under there...