The 71-74 pinto 2.0L engine is a completly different engine. None of its parts will interchange with the later Lima 2.0 -2.3-2.5 engine series. The flywheel bolt pattern and the bell housing bolt pattern are the same with the exception of the two dowl pins. The early 2.0 has smaller dowel pins than the later Lima.

If the intake bolts up and the ports match then it is also an early manifold and will not fit the Lima series. That manifold with modification will work for the Ranger round port head of the early eighties.

The exhaust is completely different and does not even come close. Even the bolts are different.