Need new backwash Valve American Titan SS

Hello all
I'm looking to replace all my multiports and backwash valve. Unfortunately All my pool sources have explained that nothing will fit the filter anymore? Its 8 inch on center and I have found a couple of valves that say they do but like I said I have been told otherwise. Does anyone know what will fit? Slide will work also.
Thxs
Phoenix

Hi, Phoenix. Unfortunately, I can't help with this one but hopefully someone will be able to. I just wanted to welcome you to the Pool Forum!