True 120 didn't fit. From the top of my cpu (i3-550) to the inside of the side panel is 6 3/16" (~157mm) where as the True was 6 3/8" (~162mm). Those measurements should be within 1/16" (~1.5mm) (I tried to get it as close as possible) but even just looking at it, it's obvious that it won't fit without modding. It's close, but just barely doesn't make it. I suppose if one could trim the top of the heatpipes then it would just barely clear it, but otherwise you're gonna need to look for something a little shorter.
Thanks for the info! Making the case that small is a terrible decision by Lian Li, in my opinion. Most heat sinks with 120 mm fans are 158 - 163 mm tall. So just adding a few millimeters would have made this case so much more useful. Anyone know a good 120 mm heat sink that would fit this case?