B&M Auto Shifter
 

So I was looking at the B&M QuickSilver ratchet shifter for the 05-06 mustang with auto and they say it's for the 5R55E auto transmission. Did they make a typo b/c I found this page that lists what auto pretty much every car has and the 05+ mustang has a 5R55S (TCI says this too). What is this E version?

BTW, this page I found that has the transmission listings says the 5R55E is in the Rangers.