A Miata is one of the friendliest cars to wrench on, and a small, sensible tool kit covers almost everything. The one tool people skip and shouldn't is a torque wrench; the aluminum head and small fasteners punish guesswork.
Torque wrenches. Get two ranges. A 3/8-inch click wrench covering roughly 15 to 80 ft-lb handles most jobs (drain plug, lug nuts, caliper brackets, pressure plate)
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