Ayup Dan,seen this on edition earlier and thought of you.
"Ive got everything you need in kit form for you to relocate your battery in your boot.
I had this fitted to my VR6 golf for about 3 months. Abit dirty but in good condition.
You get ruffly 5m of proper high duty power cable RED (think its 650amp 11.5mm). Eyelet to connect to starter motor at one end. and connector to go to battery + at the other
Earthing cable including eyelet already attached to bolt to chassis and battery connector on the other end
£30"
Might be of some use.
http://www.edition38.com/forums/index.php?showtopic=382875