First pick the one/kind you want (cone, clutch, etc). The eaton true trac is a good one as well then It's install time. What center section to you have (741, 742 or 489)?
The chunk is a 489, that Eaton Detroit Truetrac DTL-913A572 is available with a rebate right now! $484.97 and ships free. Rebate good through 30 June @ Summit...........