Just to be clear, it does not klunk when not moving. Wanted to be sure it's not the accelerator linkage arm since you said "when I lift my foot". I assume it does not do it when just sitting in neutral?....or motor off?...and lift foot? Loose linkage would hit firewall just about where you said noise is. Could also be broken motor, tranny or Xfer case mount. I guess when you say klunk you mean heavy duty sound not linkage hitting? A shift of something heavy? U-joints are almost impossible to check by hand unless really, really bad. You have to take driveshaft off. Don't think the front drive shaft would make noise in 2WD.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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