This is to the director in the 300 club that is the transmission expert. On the 55 powerflite trans on 300s is the valve body the same as the other powerflites I think I read some where that they had different part numbers so that means they would be different,port drilling,spring pressure ball size etc.Lenny NY PS I think it would be nice if everyone put their state down after their question or answer THANKS [Non-text portions of this message have been removed]