Don't share the same powertrains -
"The 2019 MX-5 Miata is now powered by a naturally-aspirated 2.0L four-cylinder that generates 181 horsepower and 151 lb-ft. ... The Fiat 124 Spider Abarth is powered by a turbocharged 1.4L four-cylinder with 164 horsepower and 184 lb-ft., while the non-Abarth version generates 160 horsepower." Feb 14, 2019