727 Valve Body Dilema

I have been struggling to find a valve body for my 727 auto, a local tranny expert told me this one would work, I bought it all excited that i could move forward, but now I am second guessing it... the porting and bodies are quite different, the tranny guy said that if the case was the same shape it will work. What do all the transmission gurus here think.. is he right?

Thanks for any advice in advance