Don't worry about the power, just make sure your carb is tuned properly and your ignition system is up to par. The areas to concentrate on are cooling and brakes.
You need to upgrade your brakes. NEED to upgrade, especially if you have drums. And a bigger capacity radiator, I don't care how good a job it's been doing. If you have a clutch fan, replace the clutch. Period. Then haul away!
