I did this in 1974 when the car had the stock 2 bbl. Sorry, no pics. I just added a second snorkel to the air cleaner & faced the snorkels to the rear. Then I hooked up a couple of flexible hoses from the snorkels back to the firewall. At the top of the firewall there were two openings into the cowl area with oblong plastic plugs in them. I cut the middle out of a spare set of plugs & hooked the hoses into them.
