I would reach out to Panasonic to get a manufacturer specific answer to your question. They offer commercial support for exactly these types of questions.
With the current projector you have being about 15 years old, I am not sure you are going to be able to reuse that lens on a newer model.
You are going to want to find the exact make/model of the lens you are currently using as the model number you listed doesn't show up as a Panasonic lens. The main page for that projector lists the official Panasonic lenses which are compatible...
https://www.projectorcentral.com/Panasonic-PT-DW5100U.htm The plus side is that you get a brighter, laser projector with higher resolution for less money today than when this one was new.
I would be looking at this list for options...
https://www.projectorcentral.com/projectors.cfm?g=2&r=16<g=101&exp2=1&ol=1&oop=1&sort=%24#listAV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.