hope this pic helps
http://i209.photobucket.com/albums/bb169/hpv500/Rig%202010/DSCF3521.jpg
http://i209.photobucket.com/albums/bb169/hpv500/Rig%202010/DSCF3864.jpg
note that the below pic had its fans slightly protruding from the heatsink's height...it should be just fine...
personally i have used Noctua D14 heatsink before...my casing's dimensions are similar to urs...
D14 height is 160mm...if u going to move the fan to increase to 165mm, may be possible...
first time posting pics of my rig... :)
http://i209.photobucket.com/albums/bb169/hpv500/Rig%202010/DSCF4406.jpg
http://i209.photobucket.com/albums/bb169/hpv500/Rig%202010/DSCF4411.jpg
http://i209.photobucket.com/albums/bb169/hpv500/Rig%202010/DSCF4420.jpg