Different column headings for different groups in a tablix (SSRS 2008)

I have a tablix with a parent group and a detail group. The parent is the vendor and the detail lists all my open PO's with each vendor. I am getting the report to do a page break for each vendor. I would like to show vendor specific information - name, address, email, ect. for the vendor and then show the detail lines below. I would like the detail lines to have a different set of column headings.

Vendor#  Name         Addr                  email             contact
A1234     Bill's Bolts   123 4th street   bill@bill.com    Bill

               PO#    Part #    Description        Order Date        Due Date       Confirmed
                 1       Nut         3/8" 3-32          01/01/2106      01/12/2016      yes
                 2       Bolt         3/32                 01/01/2016      01/14/2016      no
                

...page break...

Vendor#  Name         Addr                  email             contact

A456    Ted's Tires     123 6th street     ted@tired.com    Al

              PO#    Part #    Description        Order Date        Due Date       Confirmed

Is this doable in SSRS?

Thanks.