spindle/ spacer question.

[boygenius]

This might sound like a silly question.
In the brake galleries there are pictures of an unmodified 944 turbo hub on a CB-Performance dropped spindle with bearing spacers. Is there any differance in a turbo hub from a NA hub. If I get bearing spacers made for stock spindles will the porsche hub fit. Is the stock spindle not long enough and that is why the CB- Performance spindle is used. I already have two 1987 944-S front hubs with good crossdrilled rotors and calipers. I was thinking of having a local machine shop make some bearing spacers for me but I want to make sure it will work first. Thanks in advance.