A Cuda with 3.23 gears I'd go with the Crower 271 hdp because I know it works well.

It's basically one step hotter than a 440 magnum cam and it'll give you more torque and roll on power without killing drivability. If you were running shorty headers or a little more compression and a better intake I'd go up to the Comp 232/237 or the old Ultradyne 231/239 but honestly that Crower is a great cam.