What are you fitting it in?
According to Wikipedia, it was only fitted in 850 models in that designation so you might be better asking your question in the 850 section :
https://en.wikipedia.org/wiki/Volvo_...engine#B5234T5
https://www.volvoforums.org.uk/forumdisplay.php?f=16
While similar engines were fitted in the 960 (B6304x) i don't know if there's any height difference although the 6-pot is likely to be longer.
Try the 850/S&V70/C70 section on the second link - good luck!