iv got a 99 5.2 and swapping in a kegger mod intake wile im at it i have access to a 97 5.9 would it be worth reconditioning the heads from the 59 and putting on my 52 ie bigger valves or runners or is it the same as i already have and would just be freshening up the top end?

 

It all depends on how much you want to spend.. The intake was a huge project for me, and that would push it over the edge for me.