leasing question
 

ok im either going to lease in july a nismo 370z ( if price is right) but deff a 370z sports. im leasing because of taxes would be better. im planning to buy after 3 years when the lease is done. (cash down w.e i owe of the car) ok can i fix the interior as soon as i get the car? or do i have to wait till the lease is up then buy it? i want to fix the stereo and get a built in navigation system.