http://www.arp-bolts.com/Catalog/Catalog.html
This is the web site to ARP.
If you wondered which mystery bolt that the vendors use from ARP I'll bet it is the one application for the fly wheel on a Ford 4.6/5.4
It's oversized on the head and a little more than an 1/8" longer than the one's I used, the mystery to the "special bolts" is they had a machine shop drill them.
ARP#254-2801, 1" long instead of the one's I used @ .875" long
Best I can do for you guy's.
Mark
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