More likely the noise is from a bad sway bar mount rubber bushing. Remove the battery and battery tray and you will see it bolted to the firewall. I pull the hood rubber seal off the lip to get enough room to squeeze the battery out. If yours is a CA 1985, they have a heat shield around the battery that makes it more fun.

The sway bar in these cars is for more that just that. It also effectively part of the "upper control arm", which locates the upper ball joint and thus affects alignment.

The "guide rod" (aka "strut rod" in U.S. cars) bolts low to the frame rail, so would probably make deeper clunky sounds. I have never experienced that.

While your battery tray is out is a good time to replace the AC return hose, if it needs that. I replaced the rubber in both mine since I have a crimp tool. It is standard 5/8" AC hose, I recall (search my post). You could use Oeticker clamps instead.

I had to use vise-grips to get one battery tray nut off. My tray was rusted thru in the aft corner (as most), but still useable and I had to de-rust the sheet-metal below the battery. I put a Battery Matt under it to avoid that again.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans