Useful Links for Parts Searching and Price
 

Here is a useful link to do a part number search that searches the U.S. Toyota parts dealers and ranks the dealers by price or just to see how much they're trying to rip you off for. You will need to click your way through to see the dealer list and prices.

http://oemparter.com/us_toyota_supra/

Here is a link to a web site that has a lot of useful schematics when you're trying to find a part number. The pages set up for an 87 Turbo but you can change that. Just put in a key word for the part you are looking for.

http://parts.lakelandtoyota.com/prod...37&searchTerm=

I needed to replace the fan clutch on my 87 Supra Turbo and ended up getting a AISIN aftermarket one from Rock Auto for $82 delivered (FCT-060). AISIN made the original parts for Toyota so its the same as OEM quality. I also replaced clutch master cylinder with a AISIN aftermarket one which was exactly the same as Toyota one except that it was painted blue instead of black. I painted it black just to look stock. I found that one on eBay unidentified except for the AISIN part number (CMT-059) for $20 delivered!

Here is AISIN's parts catalog if you want to look for OEM quality parts without the Toyota name.
The list isn't very long though. Get the part number and go to google or eBay.

https://www.aisinaftermarket.com/