i was talking to a guy at work and he got me to thinking about getting a vacuum advance dist. instead of my HEI i have. i'm no buff in distributors so here it is....current dist. is out of '84 z-28 305 (l69) it has 4 wires in one connector and 3 wires out of another connector. (1 may be for my aftermarket tach i installed years ago) what do you guys think about my setup or which way is best. thanks.