Abits usually have SMBus headers, and if they don't then you can just tap into the SMBus signals from the backside of the mobo at pin 91 and 92 of the DIMM (for DDR mobos). I have the pinouts somewhere...
Stepback any chance of getting one of these with a 6655 and 2 1668s? The 6655 has two remotes that are more accurate, and voltage monitoring. Then the 2 1668s would provide 8 more temps at 3C accuracy