Replaces the narrow angle 16 valve SOHC design fitted with throttle-body injection for a 16 valve DOHC equipped with multi-point EFI.
Clearly not done their homework, all 16Vs are multipoint EFI. Later SOHC models with crank sensor are sequential injection.
The general concensus of opinion is that the SOHC head tunes better than the the DOHC so theres little to be gained. I'm tempted to fit the DOHC onto my 8V (the Swift engine can often be picked up very cheaply over here) but don't want to have to pay out for new pistons.