I got my mate to get my ute lowered by 30mm at the rear to level it out while i was away workin. Instead he decided to lower it 30mm at the front and 60mm at the back, it looks sweet but when i went to get new tyres on the rear i was informed that my fronts (only 5000k old) where stuffed chewed out on the inside due to the camber being out. Does anyone know of a camber kit availiable to solve this problem?

yes... you can get a camber / caster kit to put in the front. Will help correct the camber angles and improve tyre wear

Any idea who supplies them?

Pedders, Repco , Bursons, a hundred different types, under bonnet adj, under guard adj, under guard screw\ratchet type, depends how much you want to spend and how much you like your wheel aligner guy, from $135ish to $207 for kits alone.