just because it is pushrod does not mean that it is bad technology, it means that the engine can be kept light and compact.
I dont understand why people think that it must be terrible as soon as pushrods are involved, some of the highest hp out-put engines (at the moment) are actually pushrods.
could you imagine how big and heavy this V4 would be with a quad cam? For not much of a gain either.
And if you even dare bring up harley motors I would suggest you dont, these are massive air cooled machines that due to the crappy metals used to cast them and the freaking massive pistons used (some are almost a litre per cylinder) combined with a stroke as big as a coma patient... ofcourse they are never going to rev hard or put out much power. That is a completely different argument.
That being said... the torque on those things are nuts.