I went to see frank and wayne dayvault today. both were so kind to take time for me. they used to dyno tune my grandfathers challenger r/t 440-6 pack all the time back in the 70's . it has been stolen for 27 years and, i recovered it. I took it, along with an old friend who actually talked them to moving from nc. to myrtle beach . cant say enough nice things about them. they still have their old equipment and tools and the cleanest shop around! oh yes , they still have a passion for the automobile and earndhart !