Small bolt to big bolt pattern

RedFish said
Aluminum adapters are avail' at ebay, 60 USD per pair. Fits your "easiest" and "cheapest" although "smartest" is debatable. Wheel adapters got a bad reputation many years ago, mostly due to improper mounting. They cant sit crooked on top of welded on drum weights. If they mount flat against the drum and torqued correctly they should be fine. Of course you would want a large bolt pattern spare and a different/larger lug wrench fitting the 20 larger lug nuts you will also need ( adapters all have 1/2" RH studs ).

I actually ran the adaptors on the back of a dart sport for years. Never an issue with them coming lose, and a lot of street miles. Car went into the 12's. I actually liked how they "widened" the rear a little, took away the "backwards" 3-wheeler look, sort of. However, never ran them on the front, nor would I.

no way am I suggesting this is the best way to get your bolt pattern widened. But, without argument, it's the cheapest and easiest for the rear.