You can contact any store dealing with second hand spares and inquire for the parts that you want. Though the dealer may charge highly for the spares and repair, they guarantee you of getting genuine spares for your vehicle. When buying a spare from them, you inquire whether they have it in store as you negotiate the price mentioned to you.
You also do not have to go far looking for the spares since you can get them at your local spares store. You only need to ask and you may end up with what you are looking for. In addition, if you do not find what you want, most providers will be able to order it for you.
Another thing you should do is search online for any available websites that sell pre-owned Toyota parts. You can be lucky to get a site that deals with selling parts of different models and makes of vehicle. This will give you an upper hand when making your decision as you will be able to get the exact part you are looking for.
In addition, you will be able to compare the prices form one site to another, since the sites have different price tags for every spare part. Note that you should only visit the sites that offer vehicle spares only. Make sure that they have a good reputation form their clients.
It is also advisable to salvage yards and read newspapers often. You may locate damaged vehicles that have the used Toyota parts that you need. Moreover, they may be the exact ones that you need for your vehicle.