From Toyota Dealer, i had to get one for my GT when i first got it...
Cost... £19.69... This is just for 1 side not a pair...
Code on invoice... N/STK TURBO BADGE FR T75327-10010-13
There are 2 colours depending on what colour GT you have:
Part number : 75327-10010-xx
-03 - darker silver - black GT's
-13 - lighter silver - white GT's
Give them your chassis model and number to double check what colour you need.
Hope this help's...