318 Turbo cam

Where are you located? I would call somewhere like Clive cams or Tighe cams and get a custom grind. Both had cores in stock last I checked.
I would also be looking pretty hard at who makes those turbos for Aeroflow - your gunna have a lot of time and money invested in that engine to have it reliably support 800HP, would seem counter productive to risk it with a cheap chinese Turbo.