my friend had a type R motor in his crx, and everything seemed good, he blew out his tranny like 4 times cuz he abused it, he only sold it cuz it felt like it was fallin apart, but that was probably cuz it was like an 11 second car. too much wear on the little car, not cuz of the swap itself. i think it depends if u get it professionally installed or u kno or u urself no a damn alot about cars, and u do it right the first time, get the right parts and dont half @$$ it