Jack the Camel Killer

I have a 2002 Hilux that is meant to have a 5le engine but i think it was replaced with a new engine with a turbo before i bought it. Its a different engine compared to what is in the manual - eg the alternator is at the bottom not the top as per the manual. The engine is seized - tried roll starting downhill and wheels just locked up. I cant find what the engine is. Any ideas on where I would find it? Also 5LE engines are hard to find - any ideas on what else i could put in? Does a 1KZ fit?

I have a 2002 Hilux that is meant to have a 5le engine but i think it was upgraded to a turbo version before i bought it. Its a different engine compared to what is in the manual - eg the alternator is at the bottom not the top as per the manual. The engine is seized - tried roll starting downhill and wheels just locked up. I cant find what the engine is. Any ideas on where I would find it? Also 5LE engines are hard to find - any ideas on what else i could put in?