are the fittings for the power steering box 5/8 and 1/2?

If you have the original power steering gear and pump the hydraulic ports are as follows:
Gear Pressure Port: Female 11/16-18 UNS thread, 45 degree flare seat
Gear Return Port: Female 5/8-18 UNF thread, 45 degree flare seat
PS Pump Discharge Port: Female 5/8-18 UNF, 45 degree flare seat
Some Chevrolet Pumps before 1970 had a male discharge fitting

If your gear and/or pump is 1980 or newer:
Pressure Port: Female 18x1.5mm thread, o-ring seal on hose tubing
Return Port: Female 16x1.5mm thread, o-ring seal on hose tubing
PS Pump Discharge Port: Female 16x1.5mm thread, o-ring seal on hose tubing

JIML82

That being said, does anyone manufacture stainless braided hose in these sizes for the PS pump??