Honestly, i'd say eaton out of those two but if it were ME, i'd look for an 8.8 trac loc out of an f-150 (b/c its 31spline), rebuild it with extra clutches in the pack (makes it lock up tighter), and a set of moser axles. THAT would be my streetable setup. I run a detroit locker in my car right now b/c I haven't anyone that still runs C-Clip axles that has broken one. Eatons and Auburns are great for the street but if you are going to be sticking with a 28spline axle still....just rebuild your stock one and pack and extra clutch disc in each side and call it a day!