When I lived in Sac and had to smog my 79 trailduster, I had a heck of a time with the original worn-out carb. I bushed the shafts, kitted it a dozen times, and still had to cross my fingers with it. I also had to replace my warped/cracked fuel bowl with several junkyard parts that were also warped over the years.

I finally bought a holley spreadbore smog legal carb and I got fantastic driveability and power (compared to the old carb) and never worried about passing smog again. Just an option for next time.