Gilas is an old variety from India. Reportedly it is considered a "sucking mango", so presumably juicy, but it is unclear if this means it is fibrous or not.
We grafted it to a 'Manzanillo' stump in 2018. The growth habit and foliage are somewhat reminiscent of Iman Pasand/Alampur Baneshan. The tree may be large enough to fruit in 2020.