I am a mechanic and used honda parts importer and i could even put a very good condition b18c on my ek4/9 but since ek9's come with b16b's i just decided i would prefare if i put a b16b.. A lot of people called me crazy for not putting a b18c instead and maybe i am crazy. But thats the way i am. The b16b is a very good engine itself but when i swaped b18c's myself into EK's, the difference is very very noticable. I could have baught an ek9 instead of converting my ek4 into an ek9 no? But i find it exciting converting something ordinary into something else. I converted my ek4 to a 9 and now the b16b into a b18c. I do the work myself so labour charge shouldn't be an issue. I just wanted to know if somebody has ever done this conversion and if there is anything i should be aware of.. Thanks for your opinion though guys