Rheem Richmond Toilet

I am needing to replace the tank to my 2-piecs toilet.
The bowl is in perfect shape. The tank has a long, top-to-bottom, crack at one of the corners and leaks profusely. I went to Home Depot and Lowes as well as a local store called Sutherland's and nobody seems to carry this brand. I looked for a Rheem Richmond website but only found a match for Rheem RUUD who apparently makes water heaters, etc. but shows nothing related to toilets. Can anyone help???

Thanks
Omar
(Dallas, TX)

[video=youtube;AT8EOhURtnE]http://www.youtube.com/watch?v=AT8EOhURtnE[/video]

All I can say is that my neighbor has a Rheem Richmond brand toilet but it's very old...I think dating to the 60s. My guess is that they went out of production long ago.

You will need to replace the whole toilet. Look at the Toto line.