That shop did ALLOT. of CUSTOM. W O R K ! ! ! It is in the article. Best bet would be to have that exact shop repeat the build for you $$$$$$$ because that shop owner would emotionally remember what it took to build that engine build.
The moment he starts pointing you down a different path.., is the moment you will have to accept that you do not have deep enough pockets to make him repeat all of that work-but if he agrees with you on price, more power to you!