I am looking at replacing the standard turbos on my 1996 R33 GTR since they are now over twenty years old. What would you recommend as a direct bolt on replacement? The car is basically standard and still runs the stock ECU with only the exhaust and air filters being modified. The car is very original so I'm not looking at modifying the car but I would like to run a little more boost than standard. I see that there are 3 Garrett turbos for the GTR being the GT2860-5, GT2860-7 and GT2860-9. What would be the best for my setup and that would bold directly on. What I have heard so far is the -7 are the best for a standard engine and add some HKS actuators so I can run a little more boost. What do you think?