I would look at it in the perspective of future profits. How many small block to big block conversions do you think people will be doing? Are you going to be gaining customer sales on such a miniscule niche market? Why not work on a setup for a more popular vehicle like 73-87 or 88-98 1/2 ton 2wd chassis trucks with the LSx based engine conversion? Make it a bolt in kit for those that don't have fabrication skills or access to a welder.