Big Block Suspension Question

For what it's worth if you are looking for examples, I'm running a 440 in a 69 Cuda with .890 NOS bars.. ( I believe that's what came in a factory big block a bodies) front sway bar and 16:1 manual box with manual disc brakes conversion. I absolutely love how the car handles it feels really good on the road in comparison to others I've had. Bear in mind I'm running aluminum heads Aluminum Intake aluminum radiator and 2in TTI headers. If you ask me, it's probably no heavier than a factory small block car. Just my 2 cents though.