Hm...I took a wire shot of the model, which is a very low-poly model too - more on a game model level. With a lot of cutting and adding verts and points one might be able to make a better mesh out of it, but then I guess it would be really better, to start from scratch with some very good images of such a beast for reference. And yes, Sharkey has great poserready cars for free. There are several cars in the market place too, ready for poser.

The basic might be free, with a texture template for coloring as you need and somebody else might be able to add some stuff to it like police lights or whatever. Those add-ons are usually not that timeconsuming like the car itself.

I too think there is a demand for such kind of cars. We have a lot of usual cars in many flavours, but with all the people into Gothic and stuff they sure would love to have such a beast. I'd suggest to place your question in the wishing-list section and in the modeler sections like Rhino, Cinema 4D, Wings etc. If you have a good mesh with seperate doors, the posing is not that hard. Might even have a modeler's contest: Creating a really good Hearse for various usage...

Btw...do you have the URL of Geometrix handy, where you found the texture map? This low-poly hearse goes well for background fillings.