Oz: This Aussie site www.hemiperformance.com.au sells performance hemi rebuilds. Do you know anything about them? I believe the prices listed are in AU dollars, so US would be about 1/3 less. It would be a good deal, depending on shipping cost (if they ship to US).

1951 Ply Concord truck
1954 Nash Rambler 2 dr
1955 Nash Rambler Farina