Are there any coding indentification numbers on diff carriers? I pulled a D44 off a Rodeo. I know the Isuzu's use a larger ring and come stock with 4.10 or 4.30 ratios. I've been told that the 4.30 uses a 3.92 and down carrier. This is what I've been "told", but I'd like to be able to identify the carrier. I don't want to have to rely on what someone has said.