Hi to all. I've recently bought a 04 XJ8 with 107k miles. The suspension will soon be done so I'm thinking of doing the conversion. I've found two kits for it; arnott and shock Masters by suncore industries. Both have all 4 struts as well as the bypass module. However the difference in price is a little over 1000 for the arnott and 431 for the shock Masters kit? I'm wondering if anyone knows why such a huge difference in price? Thanks in advance