A fresh air system straight into the carb can be inexpensive and very effective. I also agree, lighten up the car. What is it....... every 100 lbs. less = 1/10 gain on E.T. I believe.
Daryl
Yep until you get under 3000 lbs, then it gets better yet. Back in the 80's some mag did a test how weight effects et. They took a 1970 Cadillac like 5000 lbs and went from high 17's to low 13's just by removing weight. They took everything off, lol..doors, fenders, bumpers.