1966 904 into LA360. Where do I find the snout bushing?

Hi all, I’m about to drop a 360 into my 1966 Barracuda Formula S with the early 904.
I keep reading that the crank snout of the 360 won’t fit the 904 correctly and cause problems. Despite searching I can’t find any recent reference to such a bushing. I will be using the B&M flexplaye with the cut away for balance and want to use my existing 904 convertor. Where do I look?