I am sorry I don´t have those pistons anymore. Picture is over a year old. Those were pressed pins and old pistons were left to machine shop who pressed new pistons in. So you can stick to your money. :lol:
I am just rebuilding my 318 year -84 and it has no bolt with hole thru it. I have cleaned all parts/bolts now and ther was no hole in any of them, not even goggled one.