For the 3200+, yeah it's a possiblity to get it up to 2.7GHz. For the 3000+, that's a huge jump and a lot of work for that little CPU to push. I doubt it can handle that speed. If we increase the CPU bus to 270MHz and leave the multiplier at 10X, we'll have a 2.7GHz CPU if you can get it stable enough. How high does the multiplier go anyways before being locked? Isn't it like 11X? You can try reducing the mulitplier and increasing the CPU frequency higher. Push the voltage a little bit more.
That motherboard is pretty good for an overclocker. You can use this big ass fan for the CPU:
ZALMAN CNPS7700-CU 120mm 2 Ball Cooling Fan with Copper Heatsink - Retail
The reason why that is most effective is because it has the fan speed controller and it's just so huge. How could it not cool properly? Water cooling is perfect for those extreme OC rates. I'm not familiar with setting one up though. Too much for me. For the 3000+, try and OC it to 2.4 GHz. That should be a good enough range with that Zalman cooler.