Prolimatech Megahalems fit in an Antec 900 case?

Wondering if anyone has first hand experience with this setup and if it will fit.
I know that it would be a tight fit, but is it possible?
Thanks for any input

opuspocus83,
I don't have first hand experience but I can give you one of my tricks...

Step 1) Find a local vendor that carries the case you're interested in. [ Antec 900 ]
Step 2) Find the dimensions of the cooler you're interested in. [ Prolimatech Megahalems Heatsink Dimensions: 130 x 74 x 158.7 mm (L x W x H) ]
Step 3) Use Wolfram|Alpha to find a common item of approximate size to take with you to the local vendor. [ Turns out 158.7mm is close to the length of a dollar bill or three times the height (short side) of a credit card ]
Step 4) Take the item of your choice, from Step 3, to the local vendor and measure the case using the item. [ I would choose the dollar and add some 'slop' in visually ]

If you don't have a local vendor just do the math as r_manic suggests.
You could also just take an actual measuring device with you to the store, like a ruler, but I find that tends to look weird in some settings (like a big-box). Plus, if you pick an item that is already in your wallet you don't have to remember to bring anything with you.

Best Regards,
Gabriel