The Chevy Joy/Daewoo Matiz has the F8C engine. It is based upon the FX / Mehran's F8B engine. It is EFI however; be prepared to install plenty of wiring and sensors. I also think the gear lever is hydraulic in the Joy, but cable operated in FX/ Mehran, so you might want to look into that.
Other engines worth mentioning are the Mehran Euro II engine, or a 3rd gen Alto 660cc turbo K6A. Both of them are also EFI. Alto's 970 cc F10b is carby, and it is probably a bolt on.
I once heard a Mehran going past me with a Cultus G10a carby sound. However, it is definitely not bolt on.