my 79 came with a Edelbrock MT-1 Torker single plane manifold and older Carter AFB, no smog stuff. Distributor mechanical advance was sticky, fixing that helped a lot, the SBC likes lots of timing, full advance at RPM with vacuum disconnected should be 34-36 degrees. Biggest help with driveability was a dual plane Performer EPS manifold, especially with my long gears (3.08) you want good off-idle power and torque. I also eventually replaced the AFB with a 4150 series Holley but it wasn't to increase power. Now it's on a par with my R2 Hawk with 3.31s.