[demonic68]

Hey there guys before I take the plunge and order my heads has any one used the Buttler performance BPI ported race heads? I have been looking at the KRE hp heads only because of the rated 330cfm out of the box. But I have never worked with KRE. for the price it seams like a good deal. Now as for the Buttler BPI heads here are the head specs

Edelbrock Aluminum Round Port Cylinder Heads
72cc Ported Heads with Ferrea Valves, 10 Degree Retainers & Locks, ARP 7/16 Studs, Hyd or Solid Springs 315+ CFM @ 28" (Can produce 700+ HP)

Now I have worked with Buttler before And loved the customer service My hole bottom end is Buttler. My goal is 550 whp with a 250 shot of nitrous also looking to get 12.5 to1 compression running e85. So what set of heads would you suggest I would like to get the best head for my money and have it be some thing I can grow into if needed as it takes some time for me to make big purchases like this.