I pickup up a Miata with a blown motor from @pandabob a few months ago.
I got it back on the road last week and figured I would post an update!! I intended to do this all at the makerspace, but I was not able to start on the car until my wife was 38 week pregnant. Seemed like a better idea to do it in my garage where I could stop and leave.
I decided to do the popular 2.5 swap. I pickup up a low mileage motor from a local junk yard.
This was the first time I had done anything past a timing belt job, it was a great experience!
Motor - 600
Engine crane, motor stand, transmission lift - 400
Fluids, gaskets, random parts- 400ish
Ecutek to flash ecu and custom tune - 600
It took me around 20 hours, someone with experience and a lift could do it alot faster. It was also alot of 1-2 hour nights after work and waiting for parts which slowed progress.