I want to order an open element, 4-6" K&N Air Cleaner. I'm not sure what size or specs I need. Jeg's has 4 different styles depending on individual needs. I am fairly car saavy but I'm not sure which will fit. I know I probably need a drop base and most likely one that is offset for HEI. Just hoping someone out there had already figured this out. Thanks for the help!! Hope I can contribute more once I learn more about my K5!!