I got some extended brake lines for my burb for next to nothing. They are IFS brake lines, but I think they're actually designed for the 10mm bolt (what I was thinking I had). When I went to put them on today, they bolted right up to the hardline inside the chassis, but when I took the caliper bolt of, it turned out to be 7/16". Can I drill out my extended brake lines to 7/16, or do I just need to dig up a napa part number and go get a different set? thanks, James PS: I can post up pics of the lines if that would help.