Hemi-Blower

Anyone know of a builder or a place that sells carb to pan blower engines,I am building a street rod for a customer in 60s style and I suggested using a 426 hemi as power,he says great make it happen,yesterday he stops in and says he may want a blower,I have been looking on the web but not much luck,I dont want the big aluminum engine that people are advertising,just a iron block,chrome valve covers aluminum blower,thanks in advance