Well there's only one way of finding out 
Too true, and as I'm home now I can confirm that it was an almost identical set I was bidding on. Good find 
Pssst, if you take some measurements and pop them over to me that'd be great too 
When I get a minute will do a detailed measurement of everything and see if I can get a descent diagram on the go so people can manufacture there own. Will PM you them when i've done it can't garantee when that will be though Neo as builders are in up our place so everything has been hiden and placed in a safe place to avoid damaging anything. You know what some builders are like,i'm so on edge about them damaging my god damn car!

Also this car isn't a daily,far from it. At the end of the day unless you have ever tried to use rose joints on the road you'll never know how they perform,you are only going on peoples engineering views and in my experience most engineers are brilliant at what they do but have you ever asked one to make you a cup of tea or do a really simple task that involves little or no skill. . . You'll nearly always find they are hopeless! Most engineers and I loosely use the term most don't use common sense ,they are like scientists almost.
I've made rose-jointed wishbones for my mates road/track cars with very good results! Having done my research before purchasing this already manufactured subframe featuring rose jointed suspension I can argue they aren't as bad as people make out!
Obviously you are not going to get the longitivity you get from a standard bushed set up,they are designed with basic handling in mind and to last.
With this wishbone set up I can guarantee the ride will be firm but not as firm as people will imagine,with a descent set of well set up coil-overs out front you won't get the flex you get with bushes,when you sling it into a corner the body won't roll,you'll get more feeling through the steering as to what's happening out front and in practice if something un-towards happens there's more chance of saving it as with a bush set up it gives you a false feeling to certain extent.
I'm sorry Diamond Hell but I disagree fully with it doing damage to the car. I can't see how it could unless you really did have a badly set up suspension set up and the rose joints were left dry. I will be fitting grease nipples to the joints so regular servicing will be done to prevent damage. Surely if what you are saying is they can damage the car due to a more firmer ride,no matter what car you are in if you hit a pot hole wrong it will damage any vehicle.
I'll record the mileage I get out of this set-up and we'll see what happens but i'm confident it can never do damage to the car no matter what happens ( PARKING IT IN THE HEDGE DOES NOT COUNT...)