What distributor is that Josh??? If it's an adjustable vacuum advance, there will be an Allen screw inside the little nipple where the vacuum advance connects. The mechanical advance is adjusted by changing the combination of springs and advance weights..... To determine if adjustment is required, you will need to know the rpm that each timing advance event (vacuum and centifugal) begins to come in, and is full in...This you will have to check with a timing light and the engine running....

The jets, front to rear, should be different sizes with the secondary jets being larger. As a general rule, you would go down one size on each end to lean the carb out a bit...Depends really on how the car is performing. If it's rich a cruise RPM, but works great when you floor the pedal, then only a change in the primary jets would be necessary. Jetting is mostly a matter of one or two jet sizes at a time followed by a test drive....Unless you have an Air/Fuel monitor. I cheat, and do mine on Andy's chassis dyno!!!!!!Really nice to have friends with expensive tools!!!!