In the world of the Suzuki G series engine, the G10 (3 cylinder) and ther G13 (4 cylinder) share the same bellhousing boltup pattern. Yep, I saw a G10 a week ago in a friend's Samurai.
The G16 (1.6 8 and 16 valve block) has a slightly different pattern than has been adapted for the 1.3 transmission.