well if you do that you would have to drill all the way through the floor to put a bolt underneath the floor to get a good bit an then i still wouldnt know how safe that would be. if you marked it all out you could make sure you dont hit anything. thats why the stock holes r nuts welded in to the strongest points on frame... you could but i wouldnt recommend it tho. the last person i know that did that when they got in a accident the bolts ripped right through the floor an they got a good dent in there chest with the steering wheel.. just my 2 cents.. i always tray to look at other options like maybe make new brackets that would extend the mounting points forward a few inches. that would be alot safe an if you ever had to you got just unbolt the brackets an put it back in the stokc position so you dont loose retail on the vehical an also not worry about screwing anything up underneath the vehical.