as long as it isnt SLI or anything u' shouldnt have to mod it, and addming vents or holes at the top would be more effective than adding fans on the bottom since heat will have the ability to rise straight out of your PC
intel makes buggy mobos.it's not just my opinion. The p5wdg2-ws is know for it stability and that's what i'm looking for. i have had several mobos in my life ( but i'm not a grandpa ), among wich : intel, msi, gigabyte, and the most satisfying experience was with the asus ones . that's why i've chosen asus. also because it's a workstation platform the model in question.