I actually do have a book specifically on building a 302. Includes lots of pictures too.
http://www.amazon.com/Rebuild-Small-...1&sr=8-1-fkmr1
but I still have questions on it. Example: Main bearings - on a honda, you have to go off a chart on what 'color' bearings you need, because they have 8 different thickness. In the 302 I guess there is only 1 thickness.