i appreciate your help, i realized my mistake pretty quickly, i was comparing only the bottom ends when i noticed the missing dowels, b/c i was rebuilding the 2.5 heads up at a friends machine shop, but no problems so far. Built the engine and installed it in under 22 hours. I just have one question. I have a 2 pin plug that is green around the back of the engine that i can't figure out where it goes, it has a black/white wire and a brown/yellow coming out of it. Any suggestions?