I want to switch my stock seats for something nicer I have a 2012 Nissan Maxima sv does anybody know of any that would bolt in with no problem?

 

No, but I'll take your old seats.

 

Doubt you will find anything "nicer" unless you want to go from cloth to leather or want more sporty seats with larger bolsters...not warranted in a car like this. The stock seats IMO are some of the more comfortable and supportive as far as sedans go.