@ waqarmuhammad..........................
mini doesnt come with 1100 cc.. its comes with 660 cc turbo and non turbo. if it is converted to 1100 cc with changed gears and differentials.... that is acceptable as long as the conversion is done properly.
i would suggest if it is manual 1100 cc go for it; if it is auto with 660 cc and an overdrive button on the gear still go for it.
Avoid auto 660 or 1100 without overdrive.
for the parts i think everything is available and are pretty much reasonable. so worry less on that part.
lastly it has a much much better drive then a santro...