I did a 4 1/2 inch channel, no Z. So this frame is for a 1937 Ford Truck?? Can't wait to see the cab on it!! What engine will you be running??
we used a digital level and shims to make sure everything was level. we checked and checked and checked before we welded....
I just hope you jigged it during welding. That stuff will move like crazy, even when you jig the **** out of it.