From what I have been thru in the past, the money spent on a maxed out Iron Head will get you a set of 440-EZ-1 Indy's. A really leaned on Iron Head is prone to cracking. You can cut an Indy in 1/2 and still be able to save it. Cracked Iron Heads are good for fishing and planting flowers in. I run a set of the EZ-1's in my old beat up barf-a-cuda. I run 500 inches with a .590 comp cam, 4150 base carb, 4.30 gear, and 9.0 X 30.0 slick that hooks at any track. (besides this year at the Norwalk CC Event @ 2:00 am in the rain) This thing does not see over 6700 rpm. Best 1/4 mile so far 10.13 @ 129.98. The car is 3180 lbs with me in it. The rear springs have about 900 passes on them. With a Cam, Carb, and Gears I could run the #'s you are looking for. We are bracket racing correct? It is NOT how fast you can go, It is HOW LONG YOU CAN GO FAST. Save the Iron Heads for the resto guys.