Recently I tried to do a 4.7 stroker swap on my xj motor was bad so I put old motor back in which ran fine replacedexhaust manifold cps map sensor now I'm fighting with run away idle 1500 rpm an up I just replaced intake gasket with no luck I'm at a loss if anyone has a idea what to test I would be very grateful!!!

 

Sounds like a massive vacuum leak. Have you verified each and every vacuum component and vacuum line in the engine bay? Sure you are on the dowel pins properly when seating the manifold?

 

yep sounds like vacuum.
check the lines to the vac ball accumulator.