While the hose materiel may meet Federal standards, if it is not the correct length with the correct fittings, it is not safe to use in the car. We are not talking about such an expensive part that you should risk compromising safety but the choice is entirely up to you. I am not saying you can't find a cross/over part that fits, just make sure it is EXACTLY the right length and the fittings are the same. When installing brake hoses be sure not to twist the hoses, follow the external ribbing and keep the hose straight so t won't kink. Make sure the hose doesn't rub against anything also. When working on the calipers never let them hang by the hose.