8 3/4 741 case 3.55 top $?

3.55 gears are about the most popular it seems. I rarely see a 3.55 pumpkin sell for less than $400 if it's in good condition with a cone type (Auburn) sure grip. Like Geoff said add some more if it's a Dana power lock. At least $50 if not $100 more. IMO it's worth the extra money for the power lock since it's rebuildable. I have refurished a couple Auburn units but you can't really rebuild them like a Power lock. The best you can do is machine the ends of the cones down and shim them up so they grab again. Once the case is out of round and/or the cones are used up it's pretty much junk. For that reason I always shy away from them unless it's really cheap or disassembled so I can inspect it. You can easily identify a Auburn sure grip by it having only 2 "windows" to look inside and in there you'll see springs. If it has 4 windows and no springs it's the power lock that you can rebuild again and again.