Hmm I have the same issue find some.. In an idle moment I decided that the rear ARB and the brackets on the wishbones were too rusty, so whipped it and the drop links off..
"Whipping" requiring and angle grinder and some swearing due to the hex hole needed to hold the bolt still whilst removing the nut taking about 2nm of torque before rounding off..
The replacement ebay specials, cheap but not the cheapest, looked fine, and had a nice flat section to hold with a spanner whilst doing and undoing the nut.. However 3 months (3!) later the rubber on all 4 boots is crazed and one has split nearly all the way through..
None of the usual suspects list rear drop links except EB Spares, so push the boat out and get the most expensive set on ebay.. the pic even looks like the originals..
..but..OMFG.. even without opening the plastic wrapper they look even cheaper and nastier than the first set, the boots are translucent?! and the wire clips holding look like they were wrapped around by a 6 yr old (mind you, probably true..)
So, anyone actually bought some rear arb drop links (TS and V6 are the same) that werent total garbage?
I`m nowhere near a dealer and I suspect they would be £30++ per side..