Is my starter motor a permanent magnet starter motor with six electromagnetic poles around the armature and brushless around the commutator.

Hi, I have the vehicle listed above SV model, and I need to know about its starter motor, is my starter motor a permanent magnet starter motor with six electromagnetic poles around the armature and brushless around the commutator or is it an older starter motor with four electromagnetic poles and field windings around those four electromagnetic poles and two carbon brushes around the commutator which wear out very fast? And how long does the starter motor on the vehicle listed above SV model last if it is a permanent magnet starter motor? I know how long does the older starter motor with the carbon brushes and field windings last because a very long time ago in the 1990s I used to have a 1986 Mercury Lynx Wagon whose carburetor was stalling the engine and the Mercury Lynx starter motor only lasted 105,000 miles, in the late 1990s after the 1986 Mercury Lynx came the 1990 Ford Taurus which had non-sequential multi-port electronic fuel injection and wasn't stalling but its starter motor didn't last much longer than the starter motor of the 1986 Mercury Lynx the Ford Taurus starter motor lasted 130,000 miles, in the 2000s I had a 1995 Ford Aerostar minivan which had a permanent magnet starter motor but had a factory defect of the starter cable terminal corroding and so it didn't last long, I know that a permanent magnet starter motor looks smaller than the older type starter motor because the permanent magnet starter motor doesn't have all those bulky field windings, but in an Advance Auto Parts website photo the 2014 Nissan Versa SV starter motor looks bulky, if it is a permanent magnet starter motor then how long does it last and how much does it cost to replace in both parts and labor? Before the 2014 Nissan Versa SV we had a 2000 Kia Sephia which lasted 390,000 miles and it had a permanent magnet starter motor which I replaced as preventive maintenance at the Gainesville Pep Boys and the cost was $200 dollars, $100 dollars for the starter motor and $100 dollars for labor at Pep Boys, how much more expensive is the 2014 Nissan Versa SV starter motor to replace? I don't remember the Advance Auto Parts starter motor prices because they had so many different kinds of starter motors for a 2014 Nissan Versa SV and I got confused but how much do repair shops charge for labor and parts for a 2014 Nissan Versa SV starter motor and is the upper radiator hose impeding removal of the starter motor and does it need a coolant change to replace the starter motor? Thank you in advance for your helpful and valuable information on the 2014 Nissan Versa SV starter motor and like master technician Ken once requested this is a one subject question which concerns the 2014 Nissan Versa SV starter motor whether it's a permanent magnet starter motor or the older type of starter motor, thank you.