BB A-body fenderwell headers and Master cylinder brake line help

Sorry I can't give you the exact size of the tubing. I just matched it up to what was there. One thing for sure you need the proper flair nuts to match up to the Mopar master cylinder. You will need a flair tool that makes double flairs. Do not use a single flair they will crack. They are cheep about 10 bucks. To bend them I used a simple hand tube bender. Also cheep. Get yourself a few sticks and have at it. P.S. Don't forget to put the nuts on the tube before you flair the pipe. It's not hard to do. Just give it a go and you will figure it out.