I think that there is not gonna be enough space. The 2.5 is already tight as hell, and putting in a V6... lol. no. Putting a V engine into that car is not going to be an easy task at all.
Come on... you can easily fit a 2k2 engine in a spec V!
240 you really don't know your stuff!
Homie, just buy the engine...
remove the front part of the 2k2...
remove the whole front of the sentra....
replace it with the whole front from the maxima... along with the new max engine...
tada!
you now have a 2k2 saxima
or a 2k2 maxentra
ok fine! you win 240.... it won't fit...... ;-) hehe
2k2 max engine inside a spec-v... that would be pretty cool though