Yeah seems like X-Outpost has been fairly slow lately. Almost up to 200 views on my F15 vs Cayenne GTS thread but no responses.

Don't know much about the sway bars but from my experience quad exhaust tips are rare for the X5. I know Eisenmann has a sport version muffler with quad tips for the E70 X5, it's a sport system so it won't be that much louder.

For angel eyes I do recommend the LUX V4 over the CREE LEDS, they are a tad more expensive but you can change the Kelvin levels from 5k to 12k.

Hope this helps!