I had the same problem as you. so i went and got The MTX thunder 4inch speakers and a kenwood headunit . they do sound bloody good but they are around £45 a pair. ive not had to cut anything etcc
Oh and ive just fitted a mtx sub/amp and it sounds even better ,they were £170
These are what you need mate
http://cgi.ebay.co.uk/MTX-XT402-X-TH...d=p3286.c0.m14