Hey guys I have a set of 16 Comp Cams hevy duty valve springs part number 26113-16 http://www.compperformancegroupstore...de=MODFCAM2VXE rated at 191lbs./in. that I picked up for my on going build. Comp recommends these springs when upgrading to a larger more aggressive cam then factory. I have since purchased a set of used heads that already have upgraded valve springs so I wont be using these. I had these valve springs checked at my local machine shop and they all checked out great. I was told they had very low mileage (less then 3k)when I bought them but had them tested anyways for piece of mind. Since I dont need two sets of valve springs these are up for grabs. Looking for $150 shipped to your door.