Buying parts from Dubai is one thing. Getting them delivered is second. And then getting them cleared from the port is the most important and difficult part. Even after that, you will require a lot of patience as you might come to know later that your car needs some other secondary part without which the main/ primary part won’t work. Moreover, this whole process sometimes takes weeks to months.
Then you either need to find a real HALALI mechanic on whom you can trust or you will need to become one yourself and need to understand everything and both of these things seem quite impossible for a person who doesn’t have a background.
If you have a background and you understand these machines in a great depth, you can have patience, you can take all the pain from buying a part in dubai to getting it fit in your car , then I can suggest you to go for such vehicles. Otherwise, buy a new Hilux Revo or old Prado or Land cruiser in the same Budget.