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Here we are starting to form a pattern for our new shock towers. I'm using a 12"x18" peice of 3/16" plate. First thing is to mark and cut holes for the beam ends. Hopefully you cut the shock tower off in such a way as to be able to use it to help form the bottom of the plate, and assist later in helping locate your bolt holes.
Bolt your beam back to the bus and stuff the rough pattern on. From the back use a metal marking pecil (Sanford Verithin 753 metalic silver) through the threads to mark the bolt locations. The shock tower can help confirm the location now even though they are marked on the wrong side. Centerpunch em. First off, if I could figure out how to turn these pictures around, I already would have. Second of all it seems there is a reason that most pictures you see of these things locate the shock an inch or so back from the stock location, and it's not just because they are usually either ball-joint beams or to improve shock angle when the adjusters suck the front end down. It is also because when the shock now sits 2" closer in, it will no longer clear the mounting bolt heads, and as this picture shows the stock upper mount location will line the shock up directly over the bolts. So while I'm already committed to moving the shock back a bit, I'm also going to move mine up about an inch, which will allow me to lower the front about 1 1/2" with the adjusters and maintain stock shock travel.  
Now we can use the pattern, shaped on top by hand, a torch and a drill press to produce our shock tower plates in 3/8" mild steel plate. This piece is 2'x4', probably about $50 worth, and is enough for 9 separate pieces. Don't bother calling anyone and asking to buy just the plates. No one will sell. And don't ever throw the pattern away.
I used a little blue masking tape here to use as a slight shim to account for paint thickness and so that I wouldn't (hopefuly) need a hammer to install the thing when it was done. I wouldn't use more than one or two layers though. Seems to have worked out well.
Sideways, yes, but pretty self explanatory. Bolt everything together and tack it up good. Realize you are welding under your baby and try not to catch anything on fire.
After everything is welded solid don't forget to move the steering dampner bracket back two inches, which will put it again about an inch from the tower.