In looking to buy a 14bff to replace the corp. 10b on my 86 sub, what all do I need? Do I need drums and all? If I go to a junk yard and find one on a burb, what all should I take home with me? Just unbolt the springs, schocks, etc and drag it all home? Dumb question I'm sure: Do the front and rear gear ratios need to be the same?