Does any one know of a in car holder that has a built in passive FME connector for an external antenna.

There is one on the web from expanys but it says the in built antenna in the holder is only 900/1800/1900/2100 capable and not 850 or 800 mhz capable. I need a bunch of these to boost handheld coverage for a client. Can any one advise?

http://www.expansys.co.nz/p.aspx?i=134118