as in just boltons and tune?

k24 will have similar peak power as k20, though it (2lt) wont have anywhere near as much grunt from 1000-6000 rpm


k24 is pretty much better in every way

chuck on 50vtc and tsx intake came, k20 oil pump and you'll have a ripper of an engine

plus.... your going from a 150kw b20, doubt you'd be all that impressed with a k20.