S/S springs or CalTracks w/mono leaf???

I still have an original, early pair (late '70s) of S/S springs for my car that were bolted onto the car for rolling the car around from storage to shop to storage, etc. Car hasn't run in 30+ years.

Now getting down closer to paint and final assembly and re-thinking rear suspension. I did like the older stance of the Super Stock Cudas/Darts at one time, but now thinking I should lower it down a bit (my buddy /chevy guy says it looks like a stink bug LOL). I've also heard S/S springs are pretty bouncy for the street.

Have been considering Cal Tracks with mono leaf springs. Has anyone made a switch like this? Is the Cal Track set up good for street driving or just track? My car will see more street miles than track miles, so I need for it to be enjoyable on the street. When I was younger, I only considered the track, but these days I want some reasonable comfort as well for the street.

Would really appreciate your inputs on this. BTW, not going with any other rear suspensions. There are some cool ones out there, but I'm DONE with the cutting/welding/fabricating on my car. I just want to get 'er done and start driving it. It doesn't have to be the "ultimate" any more for me...