13b for 93 miata
I've considered a diesel swap... I'm waiting for the BMW 120D engines to age a few years so I can pick one up cheap and import it. They rev to about 6K and make good power and torque. They also get about 3X my current city fuel economy. I bet with a slightly larger turbo and some stage 2 injectors I could make that engine perform very well. I won't be doing that to this car though, I'll get one that's a little more beat up and use it as a DD.









I'll take two, please.