[Adger Smith]

Larry,
The bars on my car are:
Top - 20" C-C
Bottom 22: C-C
The 4 link bracket on the rear end has an 8 deg forward tilt
off of vertical for the top mount.
You will probably have better luck with that than just a vertical on center
rear end bracket. My car liked it even though it shortened the top bar.
Call me if you want the mount distance off the C/L of the housing
and bar angles.