Not much to this mod really. The reason for
replacing the stock bracket assembly becomes obvious when you
see it. The bracket that holds the air hat actually blocks a
portion of each throttle bore. Not a good situation for
performance. The overall height of the S-bolt you'll need
will depend upon the air cleaner element you use. If
following the FABM
recommended part numbers the engineering print (click the
S-bolt pic to the left) will give you dimensions. There are a
couple of givens. The offset from the throttle body threaded
hole to the center of the air cleaner is 7/8". The
thread is a 1/4 - 20. Threaded rod works fine but if you're
doing this by hand as I did (using two pairs of pliers or
vise grips) failure to hit the correct offset on the first
shot can result in weakening the rod and breakage. I used a
2" center to center U-bolt. The unthreaded center
section is much stronger.