hello nairalander auto specialists.

I am thinking of venturing into auto parts business and due to the fact that in my City, almost 2 in every 5 cars is a toyota, i want to 1st specialise in toyota parts before branching out to other car manufacturers.

Due to possible capital constraints, i want to be very rational and economical as possible.

my question is "do different Toyota models share the same parts and what parts could they be"?

for instance, can a corrola share some parts with the Camry or Matrix, do Camry share some parts with Venza, Avalon or Highlander, do Prado and Land cruiser share any parts, since Lexus is owned by Toyota, do they share any similar parts?

then is there are any other advice you can give a novice like me, please do share, i will be very honoured to learn from you