Those plans won’t include the flange, pipe elbow, and fabrication or welding skills so if you lack any of those the booklet won’t do much good but if you know an experienced welder it can be done. In northern climates a split manifold will improve cold start drivability and a search for ”split manifold” on this forum will turn up lot’s of info. I like to think the ones I make are nearly as nice as what came on the Corvette and not the “moanifolds” that are sometimes seen on e bay.
http://rides.webshots.com/photo/2728024820023244788jwcGNy
