C10 hood hinges????

Ok ive seen them but cant find them. Who sells the fire wall mounted hood hinges or the flip to the front hinge kit for a 67-72 C10? The reason i ask is because i was told to lay rocker on 20's in the front, the tires would hit the hinges. Is that True

watson streetworks has the billet ones made by Sachse Rod Shop, http://www.watsons-streetworks.com/hood_deck.html