Hello all, In my Miata built in 1994, 1.6 l , 115 hp the engine has to be replaced due to an engine damage. Can you now install a 1.8 l engine of a Miata with 131 hp instead of the 115 hp engine. I already know that the brakes and the exhaust must also be replaced. But what about the wire harness. Does this have to be changed too? If the conversion is complete, a single acceptance would then be carried out at the TÜV. for the answers.