Norman Speed Ring Adapter LH500, LH2000 and LH2400 Flash Heads

Hi, do you carry elinchrom rotalux softbox speedring adapter to norman lh2400 lamphead?

I've done studio work before, but with different brands of strobes and everything was already matched together for those jobs. Recently my uncle gave me his old Norman setup (pack, 3 heads, 2 fans and some other misc stuff). I know I need stands, Pocket Wizards or comparable and of course soft boxes/modifiers... I'm having trouble piecing together exactly what I would need to purchase to mount the boxes to my LH2k heads.It appears that this piece will let me attach a speed ring onto the head, as I don't see any holes for rods or anything on this adapter (and it's only $20). What speed rings would be compatible with this specific adapter?I was also looking at the Westcott speed ring for the Norman LH2k heads and it appears to be all in one? However, I'd rather not be stuck with only being able to choose from one brand/line of boxes, though I know Westcott is decent (I worked in a camera store for several years but we didn't move that much studio lighting, mostly cheap brands).What ring would you recommend with this adapter to give me multiple options as it pertains to types of boxes available and also options regarding different manufactures?Thanks,Trevor