A Grand Prix White 1988 Porsche 928 S4 with original paint and service records is now listed on Hagerty Marketplace.

The biggest surprise came from under the hood, where un-Porsche-like shenanigans are going on here. Instead of the usual and renowned flat-six, the 928 features a V8, measuring 5.0 liters (305 ci ...

The 1988 Porsche 928 S4 should have put down 316 HP (320 PS) in North America. Power is transferred to the rear wheel through a four-speed automatic gearbox, which in the S4 variant meant having a ...