Having just recently finished rebuilding a 1200 engine, my experience with Wilson's book was frustrating. Not only are key details about the 1200 engine omitted but issues such as compression ration/deck height are poorly explained and the uninformed reader is left to guess. This is fatal when considering the composition of modern, lead replacement fuels which require a lower compression ratio. Other important issues not covered are - how to get the timing right when inserting distributor gear shaft (which should be done after crankcase assembly), lubrication details (using white grease for assembly as he recommends clogs oil galleries), checking bearing crush for big end bearings, as well as adjusting rocker arm geometry. Having said all this this happens to be the only book which deals with rebuilding in this depth, so it is useful but think for yourself! Another important aspect is the cost of a rebuild and the number of hours required - expect to spend thousands of dollars and hundred of hours of time. Although the book claims to make rebuilding easy, without the proper machinery and tools rebuilding is time consuming, costly and annoying. Expect to either buy or borrow specialised tools such as large sockets, micrometers, depth gauges, etc and to pay for machining work such as regrinding values, crank, etc. Rebuilding can end up being merely a reassembly task of work completed by a machine shop.