I have been an airplane mechanic for almost 40 years now and as I get close to retirement I want to change the engine in grandpa's 1982 F150 truck. It will be a direct swap, 302 for a 302. Nothing drastic (except that the replacement engine came from a 1986 truck). Changing parts and marking wires will not be a problem as I have done that all my life. Nuts and bolts are the same as on airplanes. Pistons and camshafts all do the same thing. (But airplanes are usually cleaner.)

Unfortunately, or maybe fortunately, airplanes usually do not have transmissions. I various articles and manuals have read about torque convertors and do not understand them, but most of all, do not understand all the cautions I read about them. I read that there is a drain plug, (but they don't have to be drained or they do have to be drained)there are nuts to take off, but make sure you don't turn the engine backwards to get to the bolts) and that you either push the convertor towards the flywheel (or don't push it towards the flywheel or it will either leak or bind up.)
Tell you what. If you can give me tips about removing and replacing an engine and torque convertor, I'll try to help you on your airplane questions.