Tuff-Stuff 850 PSI Valve for Type II Models 6175 & 6170

I bought a 1955 chevy custom bel air that had a billet specialties power steering pump that's preset at 1200 psi. installed when the car was restored and modified to show quality. It also had a mustang II rack and pinion that holds a small amount of fluid compared to a stock steering unit. The car would over steered and was very hard to control at fwy speeds due to the radical side to side swaying of the car. I checked u-tube and found that replacing the 1200 psi. valve with the Tuff Stuff # 5552, 850 psi. valve would solve the problem! The cost of the 850 psi valve is only around $20 and once installed the steering was working like a new car. Great product but the shipping was a little slow compared to other jeg's purchases.