would a motor from a 2005 nissan altima fit into a 2001

Try measuring it and finding out how big the engines are Its up in the air I think 05 is when they went to the 2.5L so the bay is a little bigger..

Will a 2.4 from a 2009 altima fit a 2001 altima 2.4

Will an engine from a 2005 Nissan Altima 2.5s fit in a 2006 Nissan Altima 2.5

Mine engine were 3.5!not 2.5!will 3.5 fit from 2001 into 2005 Altima yes or no?