The Dana 27 in my 1963 lark is roaring like a freight train. It was leaking pretty bad and I put a new rear seal in. That did nothing. Next I had the pinnion seal replaced by a garage that does the things I can't do at home. It still leaks and I could swear it did not whine before they worked on it. I am debating whether or not to take it back to them. My theory is that if they couldn't get it right the first time, don't take it back the second.
I noticed SASCO has Dana 27 differential's for sale. What do you all think about just getting one form SASCO? I thin k they list for around $227.00. Shipping will be another cost though. Then there is the work of swapping brakes over,,,etc,,,,,