I bought the 4 link and narrowed 9" rearend without the 3rd member for pretty cheap locally.
The front clip is from a 72 Camaro.
Tips:
Take your time and make a plan then do it right and be careful because you can easily start spending $$$ on stuff you really will not use, so plan and do lots of researching, there is so much information available in forums like this one and on the net, so just plan, plan then plan before you start the project.