First time questions

So my son and I are going to build a drag car (we hope) out of a 68 Valiant,I went to the nhra web site to try and find out guide lines to follow and found it confusing and it seems there is a lot of Grey area not explaining the rules to follow when starting a project,Is there somewhere that explains what we need to follow as far as --Roll bar-Interior-suspension-fuel system??? We want to build a car to run 10.00 and higher and we need help where to start--Thanks Steve