To remove the front speakers, you have to remove the whole door panel. It is easy:
Try to use the Nissan speaker adapters plugs so you don't need to cut wires and mess up the electric system, you can get those from eBay or amazon.
remove front door panel 1995 Nissan maxima
remove the whole front end
I had a very hard time with my back speakers. I had to remove the back seats so I could remove the parcel shelf and speakers. Then I did the same thing in reverse with my new speakers lol. I am NOT looking forward to doing the front speakers/tweeters. Haha Khloe :)
Front speakers are 4"x6" Rear speakers are 6-3/4" This is according to Crutchfield.com
The 2006 Nissan Maxima has 43.6 in. of front leg room.
The 2006 Nissan Maxima has 57.9 in. of front shoulder room.
The 2001 Nissan Maxima has 56.9 in. of front shoulder room.
The 2010 Nissan Maxima has 43.8 in. of front leg room.
The 2014 Nissan Maxima has 43.8 in. of front leg room.
The 2005 Nissan Maxima has 43.6 in. of front leg room.
The 2013 Nissan Maxima has 43.8 in. of front leg room.
The 2013 Nissan Maxima has 38.5 in. of front head room.