Well i meant to say stock rods pistons, i was pretty sure the crank was nodular iron, i ran the numbers and it appeared to be so, but if it makes a difference i pretty sure it's a 350 not a 327, we have so many of both layin around it's hard to remember. i'll get all the numbers in the morning, i know the internals have all the same numbers as my 010/020 high nickel block that's a 350. sorry for the ignorance and mistakes guys. I do know that the engine has about 3000 miles on it(7 or 8lbs of boost) with that blower no issues exept for oil leak(cheap offcenter mr.gasket chrome cover), i just put an oil pan one piece rubber gasket and timing cover on this morning shoulda payed closer attention to the internals.