I'm having the same thing, and I tend to notice it ALL THE TIME in 4wheel drive, and occasionally in 2wd (especially when cold). If in 4wd, and making a sudden stop on a snowy trail, it does it the worst (abs kicks on).
*I think* for me its the front drive shaft finally biting the dust since I'm lifted, though I can't nail it down for sure. I thought it was a ball joint at first too, but can't nail it down.
I thought it was a possible effect from snapping the driverside half shaft, but doubt it.
It feels and sounds like its coming from right under the driver floor board, which again leads me to believe its the drive shaft.
02rangermayhem, are you a 4X4 as well with cranked Tbars?
1994 2.3 XLT Turbo
Ranger Roller cam 2*R, T3, Gillis @ 20psi, 3in downpipe dynomax ultraflow, no cat, Large NPR, Turbo XS RFL BOV, LA2, Bob's big log header, Gutted/Rotated upper, Knifed lower, 65mm TB
'96 Expo 8.8, LS, Disk Brakes
245/45/17, Chrome SALEEN's
Getting over hauled!