I have a simple solution, just go import center where all imports are done. There you contact to Takasomi Motors in Tokyo, Japan. Say them to import a brand new G-16b block engine or if not available then ask them for Suzuki Esteem (in Pakistan Suzuki Baleno) engine G-13b block engine. If no other choice then ask for Honda Prelude 1996 engine which is auto-tyranny engine with all supports, it is 2000 cc engine but brother for that you need a lot of cash & custom cash & you need to alter it, without alteration the engine with full chassis cannot be installed. If they have nothing like that just say them "****-off"... =)
My friend also altered Suzuki Cultus 2002 engine with G-16b block engine & now its fully modified & customized & it is running like a new Honda or Toyota, the power is excellent & performance is like "Wow".. It costed him around 1.50k with all supports but that was 2006, I don't know that how much will it cost now..???