Small soaking tub needed

I am looking for a small soaking tub approximately 36long x 28 wide x 25 deep and cannot find one. I have also searched all over for custom made tubs but unble to find a company that can make one custom either. Smalles found is the Kohler Greek bath which is 48 x 32 x 23 and might have to get this one but would really rather have a smaller one because my bathroom was desinged for the smaller tub. I have also found a 40 x 40 x 32 but doesnt quite fit either. Please help.