Well considering it makes over 80hp as a 663, (no it isn't even close to stock) I don't see why it needs to be a 700... but that's something I plan on doing anyway.
Engine specs currently:
663 kit with lightened pistons
Heads milled and cylinders decked, compression ~13:1
174x8 cams
29.5mm intake valves, epoxy ported heads
Ceramic coatings on pistons, heads and valves
10.2k rev limit, but I rarely run it over 9.5k.
Etc etc.
Right now it wears stock carbs with Factory 3.0 kit to tame it down a little for the street, which puts it about 75hp. When I bolt on the flatslides, then it makes around 82hp.
I am currently working on some new cam and piston designs, so it will be a test bed for some of that stuff. 85hp/50lbft. is something I'm shooting for, @ 700cc's. Making it streetable is the challenge.