If you're willing to play with a curve on that distributor, maybe using the heaviest pair of springs and modifying the weights for a short advance. I'm thinking every 1000 rpm that can be delayed before 'all in' will be 1000 rpm it doesn't show retard on the top.

https://www.tapatalk.com/groups/racingfu...-less-t765.html

Can you afford the time experimenting??