I have a 2002 Disco II and the heater matirx core o-rings have gone out, hopefully it is not the entire core. I was looking online and found a site that does a step by step change of the core and o-rings for a P38. The core is the same for the Disco II, does anybody know if this will be the same for the Disco? I mean going in through the glove box and not taking the entire dash out. Thanks for your suggestions.