/6 with headers???

OK so on this note- I have been considering a headers setup WITHOUT changing my stock 1bbl intake (for now) because my exhaust has rusted through in a couple spots, and it's foolish to pay for a stock replacement when I could change-it-up for a few dollars more (insert pic of Clint Eastwood scowling).

What would be the best way for me to install headers without swapping intakes? Anything special I should know? I know a few people who weld, who could add a heat riser from the #3 tube up to the intake, without too much trouble. I just gotta buy them a 24pack and compliment their Harley :) So is there a specific header brand I should look for? Ideally a used set would be best since I want to strip it & have it ceramic-coated anyway......

Also, I am looking for a 6-into-1 configuration, so I can run a single 3" flowmaster out the back....