for a bosch points dizzy in a red 308

will they interchange with a red 6

and how can i tell the best 1 to use for my engine, which has dual fuel, b cast heads, + 060 dish tops, a small cam, performer manifold, extractors and dual fuel all in a lightly driven hq ute

i have about 6 vacuum units, all with different numbers on the arm and 1 has 12* on the can

thanx in advance, johnny