thansk brian looking at that article now. interesting enough isnt the gps antenna a standard antenna with standard cable using the standard coax.. i think it called sma or mcx connector.. so really any antenna would work right. I have a old magnet mount one from and a triband one from my carputer days.

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E53 06 3.0i

wishlist
Comfort Seats
speckdock 2.5

Mods
Air suspension - wip
skid plate replica - in box
OEM sunroof deflector
OEM bluetooth streaming
navi,dsp,tv retrofit - wip
Low prof roof racks
2 directtv satelite tuners
Grom audio usb2
quarter and back window sunshades
2 10"subs- boxes opposite sides/Alp MRP-M850
rear heated seats retrofit
rear footwell lights retrofit
remote window roll up