I bought a 93 4runner with a swapped engine a few months ago, the guy said it came from another 4runner. I tested it out and it ran fine so I bought it but now I have come to realize that I don't know what size engine it has. I know the OEM engine was a 3.0 v6 but I don't know how to tell if the one it has now is the same or not. So my question is how do i find out what engine it is?