[68 P.O.S.]

Looking at the chart, the distributor has 24 degrees of advance in it, which is good. You want it fully advanced in the 2500-3000 rpm area. The copper springs fully advance too early, and the silver ones fully advance too late. I would put one copper and one silver in and check it with a timing light to see what you get. Should be about 2750 rpm, which would be perfect.

For the advance limiters, it depends on what you want your initial timing to be. You can use no limiter and your initial timing works out to 36 (total timing) – 24 (distributor mech adv) = 12 initial timing. Or you could use the #10 limiter and get 36 – 20 = 16. Up to you, some people find their engine likes higher initial timing, others don’t. Being your engine is a mild build, I would probably keep it with no limiter, but test both out and see what the engine likes more.