CHEAPest way to convert rear axle bolt pattern to big bolt pattern???

why is everyone over looking the simple wheel adapters? he said its not high horsepower and doesnt plan on making it that way, so why not just find a pair of thin wheel adapters? by the time you get axles redrilled add new drums and pads and seals and other misc. parts your talking some cash. adapters are probably around $100 or less for the pair and are no harder to install than just taking the wheel off.