You can find most of these parts directly at TamiyaUSA.com. Here is a link...
https://www.tamiyausa.com/search/?q=54634

Here are specific parts numbers and links...
54632 - carbon front damper stay (https://www.tamiyausa.com/shop/optio...-stay-front-3/)
54633 - carbon rear damper stay (https://www.tamiyausa.com/shop/optio...per-stay-rear/)
54634 - type s suspension mount set (https://www.tamiyausa.com/shop/optio...sus-mount-set/)
54636 - type s front mount (https://www.tamiyausa.com/shop/optio...eel-sus-mount/)
54637 - type s rear mount (https://www.tamiyausa.com/shop/optio...l-sus-mount-2/)
54638 - rebound stopper (for droop) - https://www.tamiyausa.com/shop/optio...bound-stopper/

Stock parts for the TT-02 Type S kit #58600 that are Fiberglass Reinforced Plastic (FRP) (https://www.tamiyausa.com/shop/110-4...s-chassis-kit/)
​​​​​​4305646 - front damper stay (for kit #58600) - https://www.tamiyausa.com/shop/7-dig...er-stay-58600/
4305647 - rear damper stay (for kit #58600) - https://www.tamiyausa.com/shop/7-dig...er-stay-58600/

I am currently in the process of rebuilding/upgrading my TT-02D Type-S kit and I have been able to find most of the parts I needed through TamiyaUSA.com Amazon, ebay, or various online stores. Some parts can be difficult to find so also consider looking at aftermarket companies such as Yeah Racing that offer decent/affordable upgrade parts of the TT-02. Here are some links
https://www.yeahracing.com/rc-car-pa...de-hopup-parts
https://www.yeahracing.com/rc-car-pa...e-hop-up-parts
https://www.yeahracing.com/yeah-raci...t-s04-00106044

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If you can find/buy a TT-02 Type S kit, here are some links so you can compare the differences (note these kits are discontinued)
#58600 - TT-02 Type-S - https://www.tamiyausa.com/shop/110-4...s-chassis-kit/
#47301 - TT-02D Type-S - https://www.tamiyausa.com/shop/110-4...it/drift-spec/
#47439 - TT-02 Type-SR - https://www.tamiyausa.com/shop/110-4...sis-kit/tt-02/

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If you are looking for some reviews and builds of Tamiya kits, check out THERCRACER.com. Here are some links you might find useful.
https://www.thercracer.com/2018/08/5...ld-review.html
https://www.thercracer.com/2015/09/t...build-and.html
https://www.thercracer.com/search?q=tt02