Forza 6 is basically forza 5 with night and rain racing plus some different cars/tracks.. more to come in dlc too. The 300zx has even less max power now (compared to older forza games) topping out at around 600hp even with full upgrades. You can only swap in an rb26 for 666hp max or a 5.7L v8 for like 800hp. Adding the imsa 300zx was a total surprise but a great addition. Its a blast to drive in game and sounds pretty cool too. Having much wider tires means its a lot easier to control and the engine can make 959hp. If only there was an option to swap that imsa motor into the regular z32 body... Im more of a drifter than racer anyway so its back to horizon 2 for me, just cant beat the open roads plus it also has day/night cycles and rain like forza 6