You're gonna go out of your way to find a 1974 Mustang II in India?! That's probably the most undesirable Mustang ever made, and they didn't even have an optional V-8 that year! At least get a 1975-1978 Mustang because they were available with the 302 (5.0 liter) V-8 instead of the infamously crappy 2.8 liter V-6. The 1978 King Kobra is the most desirable Mustang II.
A 1978 Mustang King Kobra would cost about 6-7k and a 1975 Mustang would cost about 4k or so. You'll probably need to have one shipped from America since you live in India.