'70 Duster build-up...

YY1 - Sorry for the late reply haven't checked in on this thread in awhile! I just use a regular box end wrench to tighten up header bolts. They are a little bit of a pain but easier to get at than TTI's in my opinion! You can also take a belt grinder to and old one and grind it down thinner so it's not as "fat". There's less meat of course and could snap/break easier but I had to do it with a set of old Hooker Comp headers and it worked like a charm!