You have a few options...

I assume it is a stock distributor, you can dial it down so at 3k rpm you get 36 or so (and let the initial be what it is), get the distributor recurved by welding up the slots and grinding them down, or the best option is to get a mopar performance distributor which has an adjustable mechanical advance, and set your initial where you want, and set the total mechanical back to what the motor wants at WOT.