memphis

I am rebuilding a low mileage and very clean 89 caprice wagon. Car was hit in the right front and wrecked the fender, inner fender, core support and header. I found a good header with the correct euro lights. Recently I bought an 84 caprice 4 door to use for parts. I know the fender will work but doesnt have the 'pins' to remount the side trim for the woodgrain. My question lies with the other parts, inner fender and core support. Will the 84 parts work on my 89 wagon?
On another note am parting out the rest of the 84 4 door...