Any lube that would stop front suspension squeaking?

Tell us a little more about the squeaks. Squeaks when you hit a bump? Squeaks when you turn? What do you hear if you simply bounce the car up and down by hand? Does it squeak then?

It sounds like worn/old upper control arm bushings, they will lead to an obnoxious squeak when the suspension travels up/down.

As to replacing parts, before I bought new upper control arm bushings and upper ball joints, I would check the price on a new UCA with these parts already attached. It will save you a fair amount of work. I'm more of an e-body guy, so I'm not sure of availability/price for a complete assembly but folks on this forum will know.

As to your original question, Liquid Wrench hands down. My 71 Barracuda had bad UCA bushings on one side when I bought it. I used Liquid Wrench to verify the source of the noise. I hit the UCA bushings with it and the noise disappeared immediately. Previous attempts with WD40, silicone spray, etc. didn't quiet anything. FWIW, It was quiet for 30 days or so, then came back. I replaced the bushings a short time later.

One last thing, if you're gonna try the Liquid Wrench, don't do the whole car at once. If you spray everything and it gets quiet, you won't know what was squeaking. So spray a couple bushings and test drive/bounce the car. Then spray a couple more, rinse and repeat. Keep hitting suspension parts until it gets quiet. That should at least tell you what's making the noise. The downside is it can be messy, so I would avoid the aerosol can/spray and instead just buy the bottle with the extendable dropper.

One last thing, I do agree with the other folks that the squeaky parts need replaced at some point in the future. Best of luck, let us know what you find.