74 C20 Suspension and Brake swap questions

[Animal91]

Hi everyone! I am new here and was hoping you guys can help answer some questions.

I want to turn my 74 C20 2wd into a lowered street truck and I'm having trouble finding parts that fit the bill. To simplify matters and open up my parts options, can I swap the front suspension/steering/breaks AND the whole rear axel/diff out for the same year C10 parts and 12 bolt rear end? How much fabrication would I need to do? Would it be worth it or are more C20 street truck parts available than I think? thanks much!