Scrappy-doo

I already have a Sony head unit with 10 CD autochanger and am loath to pay the £360 for an autochanger for my new WRX (£280 for the changer & £86 for mounting kit). How easy is it to "rip it out" and put my Sony in? The original is a double height unit so I assume that I'd need a try to go under it (like the GL / TS models have) but at least it will give me somewhere unobtrusive to hardwire my Geodesy unit. So, in a nutshell, is it easy?

PSI3

S/d
Went through this myself a couple of months ago and got it all sorted in the end, do a search on here or drop me a line at..
simonj@auwell.co.uk

simon.