McPherson Flush Up Toilet Parts

[Lowell Sites]

I have a McPherson flush up toilet> It has a broken fitting on the back of it. The fitting is the nylon T fitting with the fill, flush, and outlet fittings on it. I understand that McPherson is now out of business. I have all the papers and diagrams for the unit. Does anyone know if anyone has parts for this unit?
I don't know of any other flush up unit on the market that I could replace this unit with. Can anyone help with this problem?
Thanks.
Lowell Sites

 

[Redwood]

Seeing as we have no clue what it looks like and...

Doesn't seem to work anymore... At least since they went out of business...
Could you post a picture?