its a **** of a job to do and not worth it (you would have to get your landy Qplated IF it passes an IVA)
i looked into doing it on my series the amount of work thats involved makes it not worth it you need to
add spring mounts, add radius arm and trailing arm mounts, add a panhard rod mount, add a cross member to hold the A frame, if any of your measurements are slightly out it will handle like a pig and be dangerous
oh and if you get pulled by VOSA it will be crushed unless you have put it through an IVA