mounting the cross over s in the doors is a b*****d!!! I found this out when transferring the stereo stuff from the corsa to my clio, the cross overs on my mb quarts components are like roughly 10cm by 6 cm, of the top of my head, unless the doors are any different on the 172 to the 16v, there is no space other than on the back side of the pillar behind the glass when the window is fully down if this makes sense!! not something i want to do ever again!!
chuckie