yeah you can swap either one on. For the 5g Of everything attached to the intake manifold (inectors t-body fuel rail) everything is the same between the EX and DX EXCEPT the actual manifold therefore all you really need is the manifold no need to pay extra for the t-body injectors or fuel rail. You have a 6G dont you? If so and you have one of those funky t-bodies then you will need the intake manifold t-body fuel rail and will need to do some minor wiring with the IAC.
Robster