Will a 2004 dodge stratus motor fit 2003 Dodge Intrepid?

No, a 2004 Dodge Stratus engine will almost certainly not fit a 2003 Dodge Intrepid without significant modifications, if at all. While both are Chrysler products, they used different engine platforms and likely different mounting points, even if they shared some engine *types*. The engine bay dimensions and ancillary components (like the transmission, mounts, etc.) are different. Attempting a direct swap would be a very extensive and likely impossible project.