To answer in reverse order: 3) any of the engine paints will work. Prep, of course, is the key. When I originally painted my Ranchero's engine, I was working from bare metal, so prep was easy, just shoot with brake clean, then heat the metal with a MAPP torch before spraying the paint on. On yours, the old paint, grime, etc, will need to come off first, before any prep can be done. Make sure you pop old spark plugs into the cylinder heads, seal up the exhaust ports and intake manifold openings, and leave the oil drain plug out before you 'hose' it down. 2)You can leave the hood on, if you use an intake lift plate. That will give you the vertical clearance to lift the engine with a cherry picker. Sorry, but if you use a chain fall, the hood HAS to come off. As for the radiator, please, go ahead and remove it, as well as strip all the accessory drive parts from the engine front. It just gives you so much more horizontal room for removing the engine, especially if you also decide to remove the transmission with the engine. Pop off the trans pan and pull the torque converter plug to drain the fluid, if an automatic, or drain the case, if a manual, before pulling, to reduce messy spillage. 1)If you replace anything, you must replace as a set. In this case, you must replace the cam and lifters together, as they wear into each other on break-in, and that even means if one lifter is going bad. Otherwise, even with proper break-in, you can end up wiping out a cam lobe (or more), and cleaning the engine INSIDE is much more difficult and expensive than outside. Having said that, if you have NO valvetrain issues, your money is better-spent on a new oil pump to accompany the new timing chain and gears, plus a swap to a Pertronix ignition for the distributor. Just my two cents on that.