make sure you or your dad go with, because they had my bro a right peach the gits, and they put a cat on for me which still managed to fail my mot with my bro, he thought that his decat had to be cut out when it was a bolt in 1, and they charged almost £100 to swap them, it wasnt until we did his coilys, we saw that it was just a straight swap, no cutting or welding required the cheeky b*stards