I have a completely stock 69 351W. I bought the correct exhaust manifold bolt kit from Mustangs Unlimited that has 8 short bolts, 4 long ones, and 4 long ones with an extra 3/4" of stud above the bolt head. I don't know the reason for the extra 3/4". I talked to their tech guy but even he said he was taking an educated guess since there's not a lot of guys trying to dumb an engine back down like I am. Not knowing what attaches to them I'd like that second opinion to know where these 'stud bolts' go. Are they for the engine lift hooks, a heat shield, etc? All on one side, opposite corners, which side, which corners? You get the drift. Thanks.