Can i put a. 2005 350z or infiniti lower and upper intake manifold on the maxima without changing the heads?i know they are all jq35de but I'm trying to go faster and get more power and they really don't make parts for the 2005 nissan maxima

 

Yes, but it requires modification and doesn't give you more power

https://maxima.org/forums/all-motor/...-inside-2.html

https://maxima.org/forums/all-motor/...md-spacer.html

 

How about some leads on manufacturers that make parts for 04-06 maximas.

 

Dig through the all motor section or google (that's actually how I found those links). The platform has been around for a while and has been modded a ton.