Rep Power: 0

I had to replace my D15b7 motor out of my Civic Dx. I found a D15B8 from a CX civic. I've noticed that the intake manifold and throttle body are smaller on the Cx's D15B8. Both valve covers say 16 valve. Are there other differences in the heads or blocks?? Should I use my DX's intake manifold only being that its bigger or should I swap the entire head? Any help would be appreciated. Thanks.

 
Rep Power: 234

Your ECU is set up for the B7, it would probably not run right if you just straight swapped. Not to mention the harness may be different. I would go with the B7 head on the B8 block but, would do more research to be sure. Good place to pose this question: http://www.honda-tech.com/