Bolt sizes

[BGizzlePatrick]

Hey guys,
Im just going through my list of parts that im going to send to the machine shop for them to work with and i just realized that when i picked up the 6bolt block they guy i took it from didnt give me any of the bolts to bolt down the main caps onto the crankshaft. Can anybody tell me what size they are or maybe ARP makes a kit for it or something

 

[AWDGUY86]

arp makes them, main studs, head studs, along with rod bolts

 

[scottsee]

I really want to say they are 15mm.... It's been about 8 months though sence i've taken them off.