is there any difference between 2 ltr to 1.6ltr rear mk2 escort van shocks

can any one tell me what is the difference between 2 ltr to 1.6ltr rear mk2 escort van shocks, i thought the rear would be the same.
 
but ive been searching ebay and theres listings that have rear shocks for 2 ltr vans only and theres 1.1 1.3 1.6 rear van shocks listings
 
can 2 ltr rear shocks bolt strait in a 1.6 van body? as it is now fitted with a 2 ltr
 
cheers