Good luck. It will cost a bunch of money to have a shop build you a custom curve. You'll actually have a hard time even finding a shop with a distributor machine much less someone who knows how to run it. We refuse to custom curve distributors anymore since it can take several hours to do it correctly. If you charge the customer $100 per hour for 4 hours of work they freak out, especially if they bought an old distributor for $50 at a swap meet. It is a lot less expensive to buy a digital distributor and program it with your laptop or cell phone.
Fact. It takes a long time to sort out a timing curve. Then getting the distributor to do what the engine wants is another story.
Most engines I see want a bunch of initial, almost no advance through peak torque and then a curve to peak hp. Quick curves and locking them out generally kills power at and around peak torque.
