Where are you at Doc? I've only been running dogs for 4-5 years, so I don't have a lot of experience, but the dog there under my name, he's 3/8 grey, 1/8 saluki, 1/4 coon hound, 1/8 stag, he's blistering fast, his longhaul stamina ain't what a 1/2x1/2 saluki-greys got, but that's what I have some straight salukis for. As for heart, man you can't match his, I have to leash him up after each run for 20 minutes, or sure as hell another jack will get up and he'll tear off after it, he'll hunt till he drops dead, gotta love that boy!