I am using Corvette accessory brackets and power steering pump on my Ls swap.
Has anyone got some info on what is the best high pressure hose to use with this swap?

Not what you are thinking of, but I used Braided line and -6 AN fittings. C5 LS1 in my car.

Same here, bought a fitting from Detroit speed for the pump & built an AN hose.

Got my fittings from Lee Manufacturing, in Sun Valley, CA. Cheap.
You want to use GOOD line. First one I had was from stuff I had sitting around. It did not hold :-(. Teflon line in there now.

Thanks for the input. I used a 98 Blazer H/P hose and tweaked on the pump end to about 80 degrees and it fits like it was made for the car.