Frame help

[dabears]

Does anyone have a tutorial or step by step for notching the rear of the frame? I'm looking to do it on my truck but honestly do not know where to start.... Does anyone make a bolt on, so its just a cut and bolt the new piece on? I have ideas as to how to accomplish it but have minimal metal tools and skills, i'm more of a styrene person, but i'm learning all this metal work slowly. Any help, links, ideas pictures etc would be greatly appreciated! Our if you live close enough I'll come watch how you do it.... I just don't wanna start cutting my frame and mess it up and have to start all over... Thanks in advance