Rear anti sway bar

Please excuse my possible naivee. I noted on this site a strong recommendation for a rear sway bar modification as in FHP. I also notices big numbers for one from a leading supplier who supplies the part with the bright yellow box. So, I called several other auto suppliers and assumed the product for US race cars only differed in diameter and shape. One manufacturer/ supplier said that the could supply one in 3/4 steel with bushings for in the $90 range. The size is a mite smaller than the FHP but substantially larger than the OEM. Do any readers have knowledge of a special material and if this is a fool's errand?