I don't think Eric likes dealing with the public. Your best bet is to contact Tim@FHO if you are interested in a kit.This conversion was designed when Hemi blocks were starting to become hard to find and expensive in the late eighties...are Hemi blocks easier and cheaper to find now?
The pistons were made by Arias, special roller lifters were Crower. I think TTI makes the raised port headers.
Hope that helps.
Pat