40mm fan (lay it a big diagonal) and screw in with 2 long screws.
then solder the + wire to 12V and the - wire to GND.
You might (if you have a fangrill) cut out a hole and 4 screw holes in the side of your 360 where the 2nd GPU heatsink resides.
Then the 40 mm fan has A LOT of room to suck in fresh air and nobody can stick their fingers into it.
I did it on my RGH box and it's noticable cooler, even when running a game for 45 minutes and it's standing somewhat enclosed.
then solder the + wire to 12V and the - wire to GND.
You might (if you have a fangrill) cut out a hole and 4 screw holes in the side of your 360 where the 2nd GPU heatsink resides.
Then the 40 mm fan has A LOT of room to suck in fresh air and nobody can stick their fingers into it.
I did it on my RGH box and it's noticable cooler, even when running a game for 45 minutes and it's standing somewhat enclosed.