I haven't gotten into any deep details but I'm sure Kasse P51 heads would fit the bill, Hydraulic roller, Firefly P51 ported headers. My requirements are run on 93 octane and be able to cruise at 2000rpm. I'm not sure what the cruising at 2000 rpm's does to the cam selection and overall power potential so that is slightly up for debate.
The other elephant in the room is what cubic inch to consider. From what I have read the stock blocks can go to 557 and then you have the Ford A460 blocks that take you out to 598. The most powerful SPF I've been in was slightly over 600 HP & 600 TQ with 3:46 rear gears. In reality I think 700HP and 700HP TQ would be insane but you always get used to what you have and you hate to under build
In all seriousness I don't think torque is going to be an issue with something like this so I would think you could afford to have a higher peak power just to bleed of some of the low end. The last thing I would want is something you roll into and it hits like a bomb at 3000rpm.