i spoted a G15 Baleno (Station Wagon) at my CNG guy it was auto tranny so ur local scrap market is the place to check out you maybe lucky finding one.
The Engine was based on the Local Balenos G13b and seemed exactly the same
unless i read the tickly (engine code seal), same tapet cover, Coils, Airfilter box
So if a Balenos G13 ca go into a margalla then surely the G15 can also fit into in. (i guess) still consult your mechanic.
Because getting a 90s engine (that isnt avalible here) isnt a safe idea specialy if its not local because overhauling it could be a misery.