this is what Im using for my project......2003 to 2008 crown vic fron end....comes off in one complete piece including rack and pinion......may be someting else for you to look at.......it measures 34 inches between the rails mounts


Here's what the front piece looks like.
http://i42.photobucket.com/albums/e3...RatRod/A15.jpg
http://i42.photobucket.com/albums/e3...RatRod/A16.jpg