I have a real nice open rear end with original control arms. I also have a posi unit with gears that would fit into that housing nicely. I'm not sure what the ratio is but it came out of a 65 Sportwagon. I will count the gear teeth if I have time tomorrow. The gears are in great shape. The rearend does have some surface rust but no major pitting. The frame that I still have from the same car rust was so light it could have been hand sanded off. The housing for the sportwagon was junk due to heavy rust. That is being taken in for scrap tomorrow. $500 I would like to sell as a set. No shipping local pick up only. Posi unit sold and shipped 7/11/2011 The parts are in 60586. Plainfield IL. NO SHIPPING. Thanks, Brian