this isnt quite step by step but it gives you a good idea on what you have to do. if you want more information on it just pm me, iv made about a ton and a half of these things and know all the tricks for the most part.
so im skipping the first 2 steps because trying to explain these would take a century. but in a nutshell step 1 water jet the pieces step 2 bend the pieces.
step 3 your going to want to clamp the faceplate on a machined surface, doing this will keep it straight when your tacking everything up.
step 4 tack up the center to the faceplate make sure your top on your faceplate and the fill are in the correct spot for obvious reasons.
step 5 fit up and tack in sides be sure to once again put the vent hole on top
step 6 fit up webs with tubes and tack into place
step 7 fit and tack inner gussets
step 8 weld up the inside nothing to the face plate!
step 9 channel and v grove the outside of the box and prep for welding
step 10 bolt up a cover to the box and weld up the outside start with the box itself then the faceplate this will help with starting and stopping points and make a much cleaner look
step 11 cut axle tubes to length and put line up bar in and tack them then weld them into place
step 12 fit and weld up the back brace leave that dam line up bar in!
step 13 install your brackets pm me for further instruction on this.
step 14 install the ends onto the axle tubes with line up bar. then fill drain and vent logo install and shes done!
