Why build a datsun motor, then? It's way more expensive than building a v8 engine, given the plethora of aftermarket parts. Or why even build a car? We should all be driving japanese minivans, that'll please the gods of common sense!
I get the criticism, but you should consider the design intent of this kind of project-to go out and do something different. I've seen holley carb setups, I've seen weber setups, and I've seen fuel injection setups. A bank of six motorcycle carbs has been done before, but it is uncommon. Perhaps for a reason-there are other established practices with a wealth of knowledge behind them. It's the OP's time and money, he can do as he pleases. I'd love to do the same, knowing full well that better options exist for cheaper. Why not? Or should I sell my Datsun and buy a honda minivan instead?
Here's a video of a 240Z that runs six mikuni carbs. Tell me that doesn't sound cool-I dare ya!