Hardware Store Grade 8 Head Bolts

I'm finally getting around to putting my stock heads back on my 360 and seem to have misplaced the drivers side "long" (3 Long and 2 SUPER long) cylinder head bolts. I recall hearing about being able to go to Fastenal or Home Depot and picking up Grade 8 bolts and being OK.

Is there a specific model number to grab?
I know these long bolts aren't threaded to the top and they also have a small taper to them.