Hi Guys, Need your help. I'm so new about cars, specialy to the beauty of honda. I have a 94 accord with ph20 engine from the philippines. Some guys here told me it's f20 a sohc non vtec. I'm planning to do a head swap, probably to make it vtec. Any suggestions what head unit vtec sohc will fit to a f20 sohc head? i've attached the picture of my engine. Thanks in advance!