Turbo slant six post

Well I found a little mom and pop exhaust shop for my piping needs and as I'm describing what I'm trying to do, one of the guys says "hey, do want to take a look at the duster sitting out back?" Sure do...... so there it is 70-71 duster with 8 3/4 rear, 440 from a police interceptor with fender well headers, ralley dash ( or is it rallye or rally? I wish someone would tell me already/alreadey/alreadye :lol: ) , 4 speed and bucket seats.....and it's rusted to HELL. its for sale for a mere 3500.. but it seems that the guy behind the counter thought my idea was cool enough to give me a few feet of 2.25 pipe and a 2 bolt flange for $10, but I have more than enough stuff to get started.