asalam o alaikum bros.

I ve prado 93, 2.5 diesel turbo with auto transmission havng shape like landcruiser 2. I need to seek experts opinion regarding swapping petrol engine in and then installing cng. So, besides engine what else would be needed to change? I mean gear box? foundation? Suspension? What else?

Please brothers help me in this regard. Moreover, after swapping will there be any issue?