Was not sure where to put this so please fell free to move it.
I was looking at Scythe site the other day and came across this
Scythe KAMA-BAY 120mm Fan for 5.25" System Cooling. which seemed kinda cool.
Read some reviews on it, seems there is a fair amount of gap around the frame and the case and it only comes with a 800RPM fan

.
I decided to try and make one from some perforated metal and a spare Tricool fan I have around. I mess around in the basement for a couple days on and off and wasn't sure it would work so I did not take any pics of the actual fab, any ways here is what I came up with.
So this is how it fits in the front of my case, because I could make it fit exactly there was no need to actually mount it in the drive bay as it's basically a pressure fit in to my front panel.
A view from the back, I'm using zip ties for now till I figure out some kind of clip to mount the fan.
A side view.
And the final product mounted in case.