lsc91

Hello everyone I was given a pro comp lift that was supposed to be a 3'' kit but It was an add a leaf and I'm putting together a Dakota bastard pack. My question is about the lower control arms that came with the kit, They are 16'' center to center and I'm wondering if that is going to enough for a 4.5'' to 5'' kit or do I need longer ones? My next question would have to be about the bastard pack and the keepers or clamps that hold the springs from fanning out. If I was to make a u shaped retainer like thew ones that come on some lift springs ,how do I secure them to the spring without damaging the hardened spring can you weld them on? Thanks for the info.