Yeah, I've been there and done that.

After I changed the strut mounts, the rumbling stopped.

My Samsung phone's Bluetooth and Pandora may be really annoying at times.

In order to fit metric or double bubble gauges, the threads should be m10x1.0 flare. No competent shop should have any problems. Installation of brakes is rather typical.

Replacement of the 2WD lower control arm bushings (LCAB) is the subject of a topic on another Mazda forum. According to one participant, 4x4 vehicles employ two (2) LCABs of various sizes, with the bigger one being the one that 2WD trucks should use. I can't say for sure since

I'm having trouble using the classifieds to buy components because I only have 2 DM to work with.