yep... pretty easy to get a blown or turboed small block to put out 700 hp. pricey tho.
No big Healey I know of (and I know of a bunch of em) is much less than 2000 lbs with a v8... they weight from 2100-2300 stock. Just the drivetrains for a 500 hp car are gonna weigh close to 1000 lbs.... don't leave much for body, suspension, steering, seats, plumbing, etc.
Not a fan of nitrous ... Don't like the idea of a car that the hp can vary 150-250 depending on if the bottle still has nitrous in it and the HP only comes on while the bottle is turned on.
rather just have a supercharger and have the hp on tap all the time.
lazs