To bp4w swap or build the 1.6 and turbo?
Just traded my is300 for this miata which needs more work than I was anticipating. Two cylinders are giving about 140psi one was at 90 then shot up to 130 after putting some oil in the cylinder. The other cylinder couldn’t have the tester threaded in because previous owner made his own threads…. I would like to buy a block and start building it for a moderate turbo setup. Looking to make 200-300 wheel “reliably”. Thinking about a 1.8 swap wondering if an na8 block with bp4w head is the easiest way to get a 1.8 into an na6 or if going straight bp4w would be easier. Only issue retaining the 1.6 is I would like to drive it as is for the summer but would like a head start on building the motor. Any suggestions are welcome and if anyone knows a good machine shop in northern New England that would be much appreciated!