Steering rack & pinion

In short - I've fu***d up purchase, bought 2006 Prius which clearly was involved in accident, though it was small collision in slow traffic but on my way home from seller it was clear this was something more serious when on motorway at 70mph steering wheel started vibrating when in straight direction, it disappeared on any little turn left or right. Ok, maybe just ball joint got loose.... but not, today I've lifted front and found little knocking sound in few positions when turning the wheels (L-R). Sound is coming from rack & pinion unit. Anyone removed, disassembled and successfully assembled it? My plan is to check with dealer what is the cost of replacement (quite expensive for gen I, expect it to be same for gen II) alternatively can get one from scrap yard but need to find the calibration procedure first.

BTW did read codes as follow, it's clear after reset... so far.

 

Checked toyota website, it say:
We are pleased to confirm that your Toyota is not affected by any voluntary customer service campaigns or outstanding safety recalls and no further action is required.

 

135k but this is not mileage related issue.