I have a 71 swinger, Wasn't willing to pay the big price tag that they want for the custume cut small bolt pattern rims. So I'm running stainless steel brake system up front that converts to 4.5 bolt pattern. Then had to purchase moser axels with larger bolt pattern for the rear, and redrill the factor drums. I sreach high and low for a new drum off every car model and make in the book with the right spec to fit, but was force to redrill the stockers. Currently have 18x8 centerline all the way around with 245/40/18 nttos. fit great, look great.
In the end I payed about the same I would for the small bolt pattern rim, but I gained better brakes, stonger axles, and a better varity of rims. There are endless amount of rims for the 4.5 bolt pattern. for the smaller bolt pattern I only found about 5-6 options and that includes the stockers in a larger sizes.