You say u have forged internals? I would buy a small adjustable nitrous kit, you can get one for about 350 dollars and they come complete just need to fill the bottle and your ready.
Start out with about the 50 or 75 setting w/ some race fuel (110) in it and hang on for the ride.
Most bang for you buck there.
Next thing you know you'll be needing some new tires....lol