You would definitely kick my ass. I am not even 50 yet and no way i could do that. Not that I haven't done my share of that back in the day. And I'm talking the late '70s Dodge/Chevy truck T-cases, the AWD drive ones that were cast iron. At least a half dozen times. Spent a **** ton of time under cars and trucks. Can't take it anymore unless it is something simple and quick. God bless ya,Oh, and the transfer case is hard. You can’t use a jack, you have to bench press it and it’s about 65-75 lbs I believe. To install it you’ll have to push it under there, then slide in on your back, maneuver it onto your chest and then bench it up until you can get one end resting on the cross member and then maneuver it into place. That might be the hardest part. If you don’t think you can do that, I suggest paying to have it done.