Heritage - click on the 'Resources' tab above and navigate to the 'Library'. On that page you will find the CMC manual. Not sure how much help it would be for you.
Also, on that same page you could navigate to 'Knowledge Base'. On that page you will find excellent articles/tech tips authored by Gordon Nichols. A very thorough guide along with pictures.
Another SOCer who submitted a very cool guide for Top modification is MangoSmoothie. Enter his name in the 'Search' function above and you should be able to reference his excellent tech tips.