Tiger-
Get the 3 quart Accusump with the electric ECP valve. There are 3 ECP valves, each set at different PSI. I got the 35-40 which will discharge whenever engine
oil pressure drops below 40. Worked like a charm. I wired it into the ignition so I can never forget to turn it on. As soon as you turn the key on the system will pre-
oil before you start the motor.
If you play with tire pressures and shave the rear bar and still have oversteer I'd start looking at your suspension settings.