hey all santro users, recently i heard some noises on my santro in bumpy roads, i went to mechanic they told me following things required.

wokshop: excel motors near DHA phase 2, opp gate 4 , rwp/isb.
need your opinion guys ,
is steering assembly can be repairable, or buy new is the only option?
what about lower arm and other things?
also tell me from where i should buy parts?
if you know the price of any above mention thing , then share with me.