Oh ok. Cool. Then in that case, you can do that. I'm sorry. I thought they were hydraulic. But as was mentioned, you won't get the exact lift, due to valve train angles and other variances. Also, I feel sure to get it dead accurate, your rocker shafts probably need relocating, like Mike at @B3RE offer the shims for.......BUT that's opening a whole nuther can of worms you don't need to get into right now, IMO.