* Engine bay clearance: The 440's dimensions are simply too large. You'd need to heavily modify or even replace the firewall, inner fenders, and possibly the radiator support.
* Exhaust system: Routing the exhaust would be a massive challenge.
* Transmission: The 440 would require a transmission capable of handling its power, likely a different transmission than the one originally in the Ram 1500. This also creates compatibility and mounting problems.
* Wiring and electronics: Integrating the 440's electrical system into the 1995 Ram's would be a major undertaking.
* Suspension: The added weight of the 440 would severely impact the handling and potentially cause suspension problems.
While some people undertake such ambitious projects, it's a massive undertaking, far beyond a simple swap. It requires significant fabrication skills, specialized tools, and a substantial financial investment. It's not a project for the average mechanic.