no the SOHC,im using my poa.its the same as the f22b1 but it the jdm version.but it turns out that my compression is low in cyl. 2 and 3.i bought it from alljapaneseengines in florida and the guy says it needs time to break in and rings need to free up but hes probably just yanking my crank so my warranty runs out.he seems to think if i pour alittle oil in the cylinder it will free it up.ill try and see what it does but i dont think it makes a difference.i drove it and it hauls ass in the high rpms but the low rpms it just bla bla bla bla like its a miss fire but my ignition sytem is brand new and i had no problem with my last engine.but have you ever heard that oil frees up rings?thanks