I have to agree with bill here, lock out the advance. These things go over 2500 rpm in an instant anyway so why fool with it. What I had on my old camaro... man I miss that thing.... put a switch to the ignition, get the motor spinning good, hit the switch, start everytime. Wheather or not it ran on all cylinders was another story. :shock:
Just my opinion, but I would go with about 32* total with the pump gas available these days.
If you go racing mix some race gas and sneek up on the timing, watch the plugs for signs of detonation.
Just me, but I dont put any faith in those retard boxes. Just something else to go wrong on race day. I would get rid of it myself, for the street, good pump gas, less timing, low boost. For racing, use race gas, more timing more boost.