Yes thanks, a photo would be nice,
I've no idea of what the gold setup looks like so can't envisage how to translate it onto the mk4, but a photo may help, failing that I too considered a mini type coil spring conversion thinking too the weights must be similar, failing that I'm also considering putting short length coil springs in seats between the boot floor and the radius arm similar to the quantum setup, I've found some springs only 75mm high, both the above would require a damper retrofitting but hopefully I'll be able to squeeze one in, I've 20mm spacers on the rear so that's bought me a bit more room.
You knever know it may never work and all be pie in the sky but it doesnet hurt to look, what else am I going to do tonight? Watch I'm a celebrity?:- err no