Hey, I found one. Iwill has it on their website. Unfortunately, I can't find anybody selling the thing yet.
http://www.iwillusa.com/products/spec.asp?ModelName=DVD266-R&SupportID=
DVD266-R Specifications
Processor
Supports Dual Intel Pentium III Processors from 500 MHz to 1 GHz and higher
Supports Single Intel Celeron Processors from 300 MHz to 733 MHz
Adjustable Vcore Function
Chipset
VIA Apollo Pro266 Chipset
VIA VT8633 BGA552
VIA VT8233 BGA376
C-Media CMI8738 Sound Chip
AMI 80649 ATA/100 IDE RAID Controller
Bus Frequency
Supports 133/100/66 MHz FSB (up to 150 MHz)
Microstepping Iwill Smart Setting
CPU Multiplier Selection from BIOS (2X to 12X)
CPU External Frequency Selection from BIOS (66 to 150 MHz)
Software CPU Frequency Setting