I didn't see any "options" on the end links other than stock, or lifted applications. I just ordered, and received the lifted ones for my truck and was just add to cart and payWell the options SuspensionMAXX has are 19mm or 21mm sway link nuts. My truck has neither. Mine are 18mm. So I ordered the 19mm since that was closest. I hope they work. Those things are PRICEY for what they are.