Just finished building my 289. Heads, cam, the whole works. New c-4. I have a 3:00 open 8" rearend. Would like to change third member out for a limited slip 3:50 gears. Anyone have one they want to sell or know where I can get one reasonably priced. I know the companies where I can buy one new but don't have that kind of cash right now. Gear doesn't matter. Anyone?