This is what you need, period:
https://www.ezpowersteering.co.uk/Transforms the car, increased handling, security, comfort. Not cheap, but absolutely worth it, in spite of me not having any physical disability. Dutch company, but I have sent you the english version of their website. Fitted on many cars that I know of, all very happy. Wether it is is enough to compensate for your disability, I would not know. It will not be like the PAS on say - a Mercedes, but very good indeed. Good luck and I hope you wil improve.
