Hello & welcome to the forum
I can't realy help with advice on the Toyota engine
Is the Toyota MR2 or Mazda MX5 available in Saudi.
I would imagine the Audi range of engines shouldn't be too hard to find.
If you are looking for power perhaps the Range rover V8 could be sourced
I am sure you will get some sound advice on here.
OH, I nearly forgot the BMW engine option