Fat Man Fabrications has used a shim style alignment concept on the Stage III coilover and Stage V Shockwave options
since their inception. As the venerable Mustang II IFS systems undergo constant evaluation for improvement a shim
style upper control arm design will now be seen on the Stage II coil spring and Stage IV air spring systems as well.
Although Fat Man always has and will continue to use upper arm shafts that feature OEM style forged construction with
stamped knurling rather than inadequate cast copies, this design evolution will completely erase any chance of the
alignment slipping as can happen with a slotted upper arm mount. For the widest selection of modern IFS applications
call the experts at Hot Rod Hardware 507-527-1020