Am looking at upgrading my door speakers in front and rear doors.

What sizes are the originals please.

MK1

I want to get some that will be a straight swap, no cutting or drilling.

Thanks in advance.

check out mac audio there speakers are slim line and fit the focus hold up ill find the link
http://www.ebay.co.uk/itm/Ford-Focus-Rear-Door-Speakers-Mac-Audio-Speaker-Kit-/130434929061?pt=UK_In_Car_Technology&hash=item1e5e8711a5
good quality from a top brand

Thank you.