IMM Iron heads on that Mag 318

no im sorry, im not that experienced. I do the most of the work myself...
Im just a ordinary Family guy With no spesial Income.

If OPs needed head rebuild is 1000-1200$ and New head are $1400, Ill to say BUY THEM!
I agree they are better in all ways over std heads, but I was thinking if he may save $1000, I would have used the Stock ones, as the HP gain isnt much(if any) for the Power Level he is asking for!

just trying to save he some Money.... maybe im wrong