Sounds like your motor is pretty healthy still, 11.00's is no joke for bone stock. Stay away from the burgers and hit up the exlax and your good to go 10.9X's...LOL Good luck and keep us posted on the times you run. I cannot wait to see how my heap will run one day. So are the junk yard plugs the ac delco iridiums, that's what was in mine. My L76 is a LKQ pull out with less that 60K on her, I just tore her down to the short block, checked bearings, slapped her back together with a slight port job on the exhaust side of the LS3 heads, deleted the dod and added a cam, lifters, pushrods and valve springs.
Thinking of buying a set of the group buy long tubes and making them work!
Good Luck,
Mike