Rodney
I have the MSD. advance & bushing charts will scan and send if you like I belive they come with 2- silver & blue 21 deg. bushing.
The first order of the day is to get a pointer. As they say in the old days just wind the up to 4000 hold it steady advance it till it quit picking up RPM than back it off a little.
E-Mail me if you want those charts.
Ken