ok FFR 428 the plot thickens or at least the confusion does. The oil pump has a B9AE on it, the crank has a C3AE-E and a D stamped on the front wieght and a number 10 cast in to the crank. the rods say C1AE the main caps say C2AE and the block below the oil filter says V S (and then bellow) 3026 the heads have a 3C29 date and between the plugs 6090C and then in larger numbers 40. the D on the crank mean and the 6090C and 40 on the heads. Why were all the bottom end parts different as far as dates was it peice mealed engine or what?