I'd agree, the front end needs to be heavier than standard so if you#re buying H/D springs then bear this in mind, the back end would benifit from Disco springs but any lift kit will probably be RRC/Disco anyway, they are rated 25% uprated on a Disco and 35% on RRC, the RRC has the Boge unit which most Disco don't have. I've fitted Police specwhcih depending on where they come from include TDi springs for the front even on the V8 and they tend to lift the car 20mm without making it stiffer, so you end up with a rolly polly ride, how on earth te police chased villains with handling like that I don't know.