I had a similar clunking noise that I couldn't pinpoint. I'd replaced the upper control arms, but some of those nuts inside the engine compartment were a pain to reach, and I must not have torqued them tight enough the first time. I put a wrench on the nuts and used my torque wrench on the bolt head and was surprised by how loose they were. The second time I must have gotten it right, because that took care of the noise and it hasn't come back in a year.
Black 94 SC
Black 95 SC