While Summit shows 342 different Type II pumps, they'll cost closer to $300 or more by the time you figure out port direction and then sort through all the port fittings / styles. I think it's easier to just rebuild our specific 86-87 turbo buick / 89 TTA pumps. We know what we're starting with and what we'll get back.
if someone did convert to hydroboost brakes, then sorting thru the myriad of type II configurations might be something to look at in an effort to do better layout of lines when selecting top or bottom port and fitting type rather than adapting to the existing turbo buick setup.
the video below shows some of the different configurations of type II pumps at about the 1 minute mark. figure all those variants and then some, plus, each variant then sold by multiple brands and private labels - it's just too much to sort through it all trying to configure and adapt a new pump. I do like that these guys ask if the pump will be used in conjunction with hydroboost and what type of usage the vehicle will see.