Front Clunk, Crunch Noise Driving?

Balance that against the fact that when parts wear out all the way, rubber blown out of bushings, metal on metal, the rebuild job can be a lot harder to do! And cause damage to non-replacement parts that cause you do do a treasure hunt for unusual parts.

If its a daily driver, and if it's pushing 10 years since last done... probably best to do it "soon". Sunday or parades only? No hurry.... 

Personally, I'm mechanically demanding, aesthetically tolerant, YMMV! 

Maybe enjoy the summer, collect parts, and do both sides this fall or winter. Best to do them all if you have the whole front suspension out.

The good news is that the upper trunnion on that car will last two lifetimes. Disassemble, clean, lubricate, good to go.

If they were indeed replaced 4 years ago, either bad parts were used -- "NOS" parts should NOT be used when they contain rubber -- old robber is bad rubber -- or installed wrong, or some other problem. 

If you're sure it's just the lower arms, and the ball joints are good, they you can do the lower arm with the spring in place, just insert a piece of 2 x 4 in the upper arm's socket, jack the car.

Note that the strut rod is only "relaxed" when the car is sitting on the ground. If you jack it, adn the spring is extended, there's a lot of tension on the strut rod, and it's hard to get the two bolts out. Likewise on assembly. Last time I did it I got it loosely assembled, lowered the car to the ground, in "running stance", then installed the two bolts (strut to lower arm). 

Not sure if this is the exact cause? but this would need replacing unless I'm missing something. Everything else is tight, nothing obvious yet. Hmm..?