Keyboard Bass

So in my my band when I play keyboards there is no bass player so I bought a second tier for my stand. The old bass player from the band had a crappy little casio that I hate but I discovered the bass patch on it sounds amazing. But It's not mine and he would get mad if I used it for shows or something.

With that being said does anyone remember the fender rhodes keyboard bass that ray manzarek used? Do they still make anything like that because Im in the market to buy another keyboard strictly for bass