I don't know any specifics for your CB200, but I can recommend the grey foam pipe insulation which you can buy from DIY stores. It's already split longways just put it over your frame tubes and tape it up. Also, if you are taking off the forks, wheels etc anyway, it is much easier to lift the lighter frame on and off the heavy engine lying on its side.
Here's my Z1A engine going in, note also the use of Duck Tape on polished engine cases. Nothing got scratched in this process. The large friend on the right came in handy, but may not be as necessary for a CB200.