Help convince me to go BB in my Duster?

The 8.8 is a nice option, 200$ with disk brakes, trac lok, either 3.73s or 4.10s. That saved money over an 8 3/4 with sure grip could pay for a set of tti headers. But it's not or everyone. On my last 2 a bodies I've done dana 60s, this duster has had 8 1/4, 8 3/4, 8.8 and I'm thinking in going to do another dana 60 for it.

Where have you seem them for $200? Would be very interested in that. lol