good day everyone! i would just like to ask if the 4g37's roller rockers are direct bolt ons or plug and play on a 4g33 head... the reason i asked is because i'm running a 4g33 belt drive engine in my daily driver lancer ex and i acquired a 4g37 engine recently and the only thing i like about the 4g37 is the roller rocker system...
do i need anything else from the 37's head to be put with the roller rockers on the 33's head? or can i just put them on the 33's head then adjust the valve lash and call it a day?
really looking forward to anyone's reply,
kris from the philippines