I am replacing the brake lines on my 69 with lines from The Right Stuff. The front lines that they sent me have a provision for a hold-off valve. But the original lines that were on it never had this valve. Should I just reuse my original line as it's in pretty good shape, or do I buy a hold-off valve for it?
The hold off valve was used on the disc brake cars. If yours didn't have it, clean up the original and you should be good.