The rocker bodies are physically different which will result in improper geometry. The 3.8 shares rocker bodies with the 351C/429/460.
Well my buddy doesn't remember which motor they came from. He had a 408W and a 351C in the mustang at different points, and doesn't remember which ones he sold me. I had my buddy who also has a SC look at them, and he said they will work fine, and doesn't see a reason why they shouldn't. If I were to take a picture of them in multi-angles and post it, would you, or someone be able to know if they are right or not, just by looking at them?
What would the ratio be if I used rockers from a 351C.....