Hi all, just been under the disco replacing the front roll bar links when I noticed one of my front springs has snapped on the bottom coil (break fairly oxidised so been like it for a while I'm guessing). Searched for some replacement springs and bearmach are doing heavy duty ones that look like they're +45mm for half the price of a standard pair!?.. My disco is 7seater, air bag rear. Question is.. Anything I should be aware of if I change from standard to these heavy duty? Nb. I don't off road or tow etc.. So not looking to spend any more than necessary.. Cheers