I have to smog my 70 Hemi Challenger every year, here in Reno, NV. 1967 & back are exempt. With a big cam, before I installed the single plane Stage 5 intake & Eddy Performers, I had to lean it out, empty the tank, put 1 gal alcohol to 2 gallons of gas &run it off the back carb to pass. Last yr I rebuilt the Hemi & took the carb/MSD receipts to the DMV emissions lab & got a waiver for the year. THis yr I switched to Thunders & took those receipts to the lab. Good thing they're Mopar guys, too. Your cam probably isn't huge or has a lot of overlap, so I agree if you fatten your metering rods & mess w/ timing, you'll pass. Do you know someone w/ an air-fuel sniffer that can help dial in your carb? Good luck & at least you don't have two carbs to mess with.