Sill think your best bet would Turbosport and are you after, a MK1 or MK2 two Escort Mexico.

Or maybe look in the old school section on here (there my not me many mexicos's but there a couple of nice RS2000's in there)

Thing is the owners on here are older than 18-25 (but the majority are not old enough to have owned a Mexico in the 70s)