don't think anyone has really ever posted plans.....
if you are doing the fabrication yourself....do like i did and take some cardboard and masking tape and make a template of what ya want ...
once ya got something ya like, then transfer that to steel and weld away
if ya want some constructive comments before ya actually commit to steel, post up your ideas or concerns
also, remember some basic guidelines for different parts of the bumper will dictate what thickness metal ya use and where....such as winch mount plates need to be at least 1/4" thick....
hope this helps ya some....
l8r, John