Well I finally got around to making it, took most of a day but i'm happy with the result. A massive thank you to AndyMac for his VERY informative PDF's... saved me alot of time with wiring and he is a legend for supplying all his info to the community.
My aim was to make a stealth box to fit the 8" Square Kicker Sub, i'm no carpenter but have dabbled with MDF before... i didnt think doing a curved box like Andy's was within my skill range so i've gone for a more angular approach.
One pitfall is access to the rear lights is now limited (i.e none!) also I need to make a upper panel which will not foul the sub. Its a tight fit & needs some adjusting but comments welcome!