You can see the steering tubes and lines at www.parts.com, put in your year make and model then choose steering gear and linkage then p/s pump then click diagrams. These look to be dealer only parts or at parts.com as I checked everywhere
RepairPal Certified shops can diagnose and repair your 1995 Lexus GS300. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.