You could make this swap a WHOLE BUNCH easier by changing your approach to this just a little.

Use a 2.4L Stratus block and crank, but use the 2gnt cylinder head, and the SRT4 pistons and rods. This will allow you to use the same wiring harnesses, computer, same cams, have the added strength of the stronger internals, and the intake and exhaust components will still fit.
The SRT4 manifolds will not fit in your engine bay.

Use the valve cover off of the 2.4L motor (it'll fit) on your Eclipse cylinder head, for extra trickiness.
This would make a sweet swap if done correctly, and allows you to run a nice shiny stainless turbo manifold and a big turbo in the front of the car. :)

And a 3" stainless downpipe! :D