When I built my 493 I had a custom grind made for it and I went with Dwayne Porter who is one of the best there is on cams. If you call him and give him all your cars specs and tell him how you want the cam to work he will spec and make your cam for no more then most off the shelf cams. But he will know what will work the best for you as he is an expert on cams. I could not be happier with my flat tappet solid cam he made for me. He also nitrides the cam which harden's it and will get you the best lifter to use. His # is 802-951-1955 if you decide to call him. he is also very nice to talk with and wil help you with any questions. Ron