I bought a 72 55 with a bad 2f motor awhile back and have since rebuilt it and am finishing things up. It came with a tri - valley 6 in to one header that I was not impressed with but it's what I've got. I had a buddy weld all the carcks in and actually installed it. Now that I have been getting up to speed here on this site I've been enlightened on the finer points of the tri valley 6 to 1 header. I took it off today and it's definately lacking in metal where the lower two intake manifold bolts go. The intake has been milled at the bolt hole locations to the same .40" thickness of the header but without using some double extra large washers, the lower two bolts do not contact the header at all. If I use bigger wahsers I'll have to grind the intake some more to get the thickness to match. I don't want to spend time and money on something that seems cheap to begin with. What should I do now? I'v been reading about alternatives but for the 55 with the stock steering box location there is not much available. Do I stick with these and weld some more material on to the header to catch the lower two bolts? Then should I have it surfaced? Any suggettion are appreciated.