Our Weld On Coilover Kit is the exact same kit we use on all of our coilover conversions. It includes the longer sleeves, weld on perches, upper hats, and your choice of spring rate! The kit was designed for the "do it yourselfer" that has cutting and welding capabilities.This comes with a complete set of 4 HyperCo Springs, 4 sleeves, perches, hats ane everything else you need to put together the front and rear coilovers. Swift Springs are an optional upgrade for an additional $40. We'll be in contact after your order is placed to help you pick a custom spring rate!