I've been looking online for a minute on where to find atleast a louver piece for the back glass and Im not getting anywhere, I've found pieces for the altima but can't confirm any size differences but if anyone has advice it would be greatly appreciated

 

Altima part should fit. Do you really want this;look?

 

Look on ebay for a rear window roof spoiler, I've had one on my car now for about 5 years.