I know the likelyhood of having a duracast crank is very slim. I recently bought a motor and it didn't have a flywheel or harmonic dampener to tell if it was neutral balanced. The previous owner said it was a late 89 build which would tell me its a forged crankshaft but after I pulled the oil pan and looked at the crankshaft I'm not sure anymore. The number on the last main seems to indicate it is an 89 block (E98 ECA). The crankshaft weights do appear to have holes drilled in them for balancing (sorry forgot to take a picture of that) but the crankshaft also has numbers that appear "cast" into it. There is also some number stamped onto one of the counterweights (9E 398 with an N above the number), but searching those hasn't revealed anything. I took some pics, they are not the best. I've checked the other posts about Duracast cranks and I'm still not sure. Anybody know for sure by looking at the pictures? Need to know before I purchase a balancer and flywheel. Thanks in advance.