What's the cheapest way to install and exhaust system on a big block a body

Find out who bends and installs exhaust systems for cash (typically a guy who works at Meinakee or Monroe does it on the side) or if you are really tite funded. 2 header mufflers bolted to a set of headers. 2 90 degree dumps and 2 hangers. That’s cheap….
Sorry but there is nothing “cheap” any longer.