I did front swaybar bushings by myself almost two years ago with factory parts and replaced the cabin filter round about the same time. I didn't have time to order the filter from Rock Auto for this weeks work. I'll get to that in a bit. The filter for the engine was in good shape so I didn't change that out.
Rear bushings are next and will probably do that when I do shocks. I have a clunk coming from the rear that I cannot track down and it is not predictable or consistent at all so that is irking me some. Also changed interior bulbs and license plate bulbs to LED today.
Stereo upgrades are next and if the seller still has them when I get some $$, some Miata wheels that look really nice and fit. I'll be keeping the car longer than I originally thought so it was time to put some $$ in and get it the way I want so I can continue to enjoy it.
I can say that the plug change has restored the low end torque. Used to be that in my town there are several gentle hills with a 25mph speed limit. Even at that speed the car is already in 4th gear and I would get light spark knock. Not anymore.