[Davescort97]

Not sure what the CVH designation is all about? It sounds like one engine is the DOHC 4 valves per cylinder 2.0 and the other is the 2.0 Split Port Induction which has a SOHC and 2 valves per cylinder. If this is the case they are not interchangeable. They aren't even close. The block and the head could not be swapped. A sure way to tell if they are the same engine is to check the VIN on the dash. The 2.0 SPI has a fifth digit letter P. If both Vins have the 5th digit letter P the engines are 2.0 SPI SOHC and should be able to be switched. From your description you have 2 very different engines and they won't interchange on the block and head.