You can try
www.ffoc.co.uk but they are all big headed wankers on there imo, and you do also have to pay to access any room apart from general chat.
www.focusowners.com is probably the best free site, but its mostly younger 'yer mans' with chavvy focus's on there.
www.focusfanatics.com is also a good site but mostly american so you might struggle to find the info you need!