Under hood clearence

You might also look at a "plenum" (or whatever it is called), which is a 90 deg elbow which bolts to the carb inlet. MeMike has one on his early slant engine. They come in purty chrome, some w/ 2 ducts. Also used on production engines (ex. Magnum), but usually to a throttle body, so different diameter, though there are carb adapter plates.