Looking for 69 Impala Parts

I'm looking for some parts to get for my 69 Impala Custom. The main thing I need is a core support, any ideas on where I can get one? Not sure as of what other parts I need yet except maybe some bumper bolts.

I'm looking for some parts to get for my 69 Impala Custom. The main thing I need is a core support, any ideas on where I can get one? Not sure as of what other parts I need yet except maybe some bumper bolts.
Have you tried the following places.

http://www.classicindustries.com/
http://www.harmons.com/
http://www.paddockparts.com (http://www.paddockparts.com/Paddock/dept.asp?dept_id=12&mscssid=06C852F81E8A746018CC169688432F8D&Gift=false&GiftID)
http://www.impalas.com/ (http://www.impalas.com/departments.asp?dept=8&last=8)
http://www.yearone.com/