Ln105 motor

[André Costa]

Hello guys, I'm from Portugal and I recently bought a toyota hilux ln105 from 1992 and I would like to ask for help.

I bought the toyota and I have 2 friends, one has the hilux year 2000 with the motor 2lt (2.4 turbo) and the other one has the same ln105 as me with the original motor 2l II (2.4 non turbo). But both have driven mine and say mine is more faster and explosive then theirs. 

Original in the papers says mine is a 2.4 non turbo, but my friend thinks it is really the 3l (2.8 non turbo) .

I've seen photos in Google from the 3l motor and looks almost the same as the 2l... 🤦‍♂️

How do I now if it's the original or has already been swapped...🤔