Custom Strut Rods

Ok I know this is an old thread but I'm thinking about making my own adjustable strut rods and I figured it be easier to ask in here and others might benefit from the info already in here. Anyway, I'm shopping around on QA1s website for the different parts I need (their website is AWESOME btw!!) and I was wondering if I really need the misalignment spacers or just regular spacers?