Ok, so took my Prelude to Honda to have the head rebuilt and they ended up blowing the rings out of the motor. So i got a F22B OBD2 DOHC NON VTECH (silver top) thrown in there. Runs like a champ, but I'm starting to hear an exhaust valve tic..... My question is, does anyone have any info regarding the H23 (OBD1) head mounting up to the F22 (OBD2) block? Being that they are "supposed to be.." exactly the same head. Any info would be greatly appreciated. Thank you.