This may be old advice, but if the rack/tie-rod combo are too short, make sure the rack-end pivot points line up between the upper and lower control arm-to-frame pivot points, or you may get some unpleasant bump-steer. Rack extensions are available for mustang racks.

Current fleet (subject to change w/o notice)
\'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run.
My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787.

Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.