Rear shock difference

I don't believe I have ever seen separate shock part numbers for auto VS manual. But the original Mopar drag shocks were 2" longer extended length than the stockers to allow the SS springs to work properly. Everybody always said "use the Imperial rear shocks" which was true for a while, but now they've all gone to making them the same length as the A body, at least last I checked. Maybe someone knows something I don't.....which is entirely possible. lol