Hey there

As I have searched on the internet there is no information about GFTI colleges in South India. However The cities states  in which these colleges are located include:

1. assam
2. Uttar Pradesh,
3. Ranchi,
4. Uttrakhand,
5. Chhattisgarh,
6. Jammu and Kashmir
7. Uttarakhand
8. West Bengal,
9. Andhra Pradesh,
10. Delhi,
11. Gujarat,
12. Aizwal,
13. Punjab,
14. Madhya Pradesh,
15. tejpur,
16. Maharashtra,
17. Telangana &
18. Chhattisgarh.

For more: https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/jee-main-cutoff-for-top-gftis/amp&ved=2ahUKEwiPuvTF_KrzAhVXzDgGHcwgAqIQFnoECDIQAQ&usg=AOvVaw0KfchVeqJLqVS3URw519K2&ampcf=1