This is the old 1.6 family and uses bucket under lobe not flat tappets that are commonly associated with high lobe contact pressures like those found on push rod engines and OHC engines that use a offset slipper to reduce lobe diameter operate multiple valves from a single lobe.
This engine uses full size lobes (1.1) in direct contact over the valve spring and has very low contact pressures on the cam lobes, wear on this type is not common unless the cam is defective (not hardened properly).
I read many times on here about flat tappets on engines with lower spring pressure not needing higher levels of zddp, this is incorrect, the rocker arm multiplies the force of the spring on the cam lobes, on OHC engines that use slippers to operate multiple valves from a single cam the stress on the lobe is dramatically increased and the use of a higher level of zddp may be beneficial.
You can run the 507 in your engine without concern of addition wear.