update ***
I installed the koyo radiator along with the PRL intake with no issues. Those other threads that have fitment issues must be specific to the SI and the Integra. As for the Fl5 they fit perfect
Anyone running a koyo radiator with PRL intake? I was wondering if they will fit together on the FL5. I read somewhere that it didn’t fit because the koyo radiator was to thick. Any input would be appreciated as I just ordered the koyo radiator