sean i took the back seat out and about 15-20cm down from the top in the centre there was a perfect spot where there was double plated metal , the baby bolt kit comes with instructions including what size drill bit you need , was very easy but you need to have seat belts fitted in the back i have 3 seat belts fitted in the back so i put baby bolt in the middle and and my other 2 sit either side, i have had all 3 kids in the back what a sight and bubs loves the wind in her face .