Dude, for a street driven car this would be a major mistake. You will FEEL every bump on the road and the shock will go up into your arms. For laughs, before you do this, do the following:
1. Disconnect the fitting on the front-mid of the power rack and go turn to turn until you have no PS fluid at all in the system. It will start to suck here.
Reconnect the fitting unless you wanna leave a trail of oil around your block.
Go for a drive. See how much it sucks in all kinds of different ways. You will need to HANG onto the wheel as each bump will try to twist the steering wheel in your hand. You'll feel every bump and ridge in the road. You arms will be sore after 30 minutes of driving around like this. Then go for that 90 degree turn onto a side street. Wow, didnt that suck? You need to groan to straighten it out before you hit the telephone pole on the side of the road.
Dont do it unless this is a dedicated drag car.
Now imagine that the flaming river manual rack only sucks 60% as much and you will hands down hug your ps pump and be so happy that you still have it
BTW, the ps system doesnt weight much, the leaks can all be plugged and the sloppiness corrected by some polyurethane bushings/new bearings and tie rods (which you should fix either way). Keep the ps dude. It's more than power assist, it's also a shock apbsorber between the road and you.
I went through this a year back