From my experience, I would use POR15. From you avatar, your car seems to be white, hinting you would probably do the interior the same color. What I have used, and will be using on my car is POR 15 "Whitecote".
A few things before you do this. It MUST be warm outside. I really wouldn't apply the paint unless the air temp is 75+. Secondly, be sure you use a FOAM brush. The reason is the hair style brush leaves stroke marks.
IMO, this is better then a spray can. Tuff as nails and easy to apply.
example (interior done with POR with foam brush)