most people are likely wanting a way around the factory crank sensor is that they have a really good working LA engine and don't want to swap it out for a magnum or they have a numbers matching car and want to keep the engine that in it
That's why I've been working on it, rather keep my numbers matching block in the car, and it's a good motor.
The other reasons are:
1. The custom billet flywheel costs an arm and a leg.
2. Machining a stock flywheel down seems hit and mess, and I don't even want to know what that costs. The one guy I know of that did it said he was going to get more made, and I asked that he keep me updated. That was over a year ago and nothing so far, don't think it happened.
Just as a reminder, the above reasons are only for the magnum swap as the balance would be wrong for me anyway.