If I am not mistaken the car you are buying already has the d16y8 or d16z6 sohc vtec. So you need to find a d15b7 block and put your head after first port and pollishing, 5 angle valve job, and titanium valve springs, and retainers, on that block, go with the y8 ecu.
If he's buying a car with a Y8 or Z6 already in it then why the hell would he want to ditch the 1.6 block for a 1.5?
I agree with everyone else, you're full of it...