Engine swap (same size) rough idle, jumping, lagging

Have just recently done an engine swap. I have replaced all my sensors, idle control sensor, camshaft sensor, you name it I did it. check out my vacuum hoses over and over and over PVC valve distributor plugs wires timing position sensor I have done all this a hundred times. I am now going to go and check on my grounds once again with that being said, this is what it is doing. it is idling horribly from beginning of cranking it up it does not matter if it is hot or cold. it does not matter what time of day or how long ago it was. it runs like it is missing and I cannot figure it out.