You will need 765hp to go 8.99 at 2800 lbs
Ported dragpack intake.
1 BGE 6.4 bare block 1400.00
14 to1 rotating assembly 4.05 would be max. 3200.00
Find a set of used heads 6.4 put Ti valves in it and port them.
Now for the tricky part. Do you run stock rockers or get a set of TD or Jesel and not the stock looking ones. This is where you need some testing because IMO there is 2 way to make power without boost. CID or RPM. The stock rockers will limit you to 650 lift IIRC and 7200 to 7500 rpm.
Its going to take money to get there because it's a new build. More than your small block collection or BB because you already have the parts.
But the biggest single advantage of the G3 is PART AVAILABILITY.
NO waiting, on the shelf.
Matt