right again tab the knock outs are in the chassis take the boot carpet out u will see the recess [ie pressing inwards] if u look at them u will see the knock outs tab is on about put a punch in the middle of them and give em some welly then u will see a 50pence sized hole at the bottom of this is a centrepunched divot u need to drill this 10mm as i remember ensure u put tubes in the chassis and u should have two metal plates the size of two fag packets to spread the load in the boot i also think there is a hidden bolt where the towing eye is [not sure tho]