D Dart spec. Anyone build one?

So I'm most likely going to use the Isky E4 cam with Doug's headers and a Holley 4160 on my Eldelbrock LD4B upgrade in the spring. But I'm just curious. Has anyone built a D Dart clone using the 284 degrees with .495 intake and .505 exhaust spec cam they used in the D Dart? Is it streetable? Is it usable in a flat piston 273?