Here it is! It should be plugged with a flange head bolt. Like Paul said, there's a bulge in the block for the balance shaft.We have a 91 Colt Vista AWD too! Same generation. Are you doing anything to it? We're in the process of a 4g63t swap...
It can! From personal experience it's does just fine, however, if you rewire it and have a really good electrical system and feed that puppy 14+ volts at all times, you can run into some overrun. But yeah stock wiring with a 255 is just fine. I...
That combo will be just fine. (hot take) you can even run that combo with the factory fuel pressure regulator! If you went with a 255 rewired, you would need an aftermarket pressure regulator to not get overrun with too much fuel.