The manufacturer does not make that big a difference but you want them coated with a 3/8” flange and direct bolt in capabilities. If you can afford stainless that is even better. I was going to recommend coated Doug’s or Doug Thorleys but they appear to be winding down both businesses. JBA used to be good but it has been years since I have looked at one of their products. Shop Jegs or Summit for your best deal unless you are in the parts business and can get wholesale pricing.