The 962 is essentially a development of the 956. The primary difference is the wheelbase, with Porsche moving the front axle line forwards - the 956 didn't meet safety regulations as the pedal box was actually ahead of the front axle - and a steel roll cage integrated within the aluminium monocoque. The engine is slightly different too, and as this is the 1988 car it'll be a 2.8 twin turbo instead of the 2.6 single turbo.
My favourite 962 thing is how it won the 1994 24 Hours of Le Mans. There were new rules - as often happened in the 1990s as the FIA was trying to push F1 and prototypes together - which required race cars based on production road cars to enter GT1. One of the 962 race teams, Dauer, had converted some 962s for road use (13 in total, eventually), and they were barely road legal. There were some differences in the body panels and floor, and Dauer fitted hydraulic suspension to make the ride height meet minimum standards. As it was a production car, Porsche picked up a couple of Dauer 962s, undid the changes and took first and third.