Vintage Indians have distributors but HD's do not. It is simply a timer. If pertronics does not make a unit for a 45 degree v twin which i'm almost certain they do not there are easier alternatives.
I'm not saying it cannot be done because most everything can be accomplished with enough money, patience and determination, but i don't think you'll find much discussion about this topic as there are proven systems that have been designed and used successfully to do this job without any modifications meaning that if it fails it can be readily replaced with the antiquarian contact set and be on your merry way again.
I do understand that some people like to do it their own way.
Personally I've never had an issue with points since getting my 65 with a bad condensor and a distributor shaft that had considerable runout (throws off rear timing) over 30 years ago.
I think the most popular is "ebeyond 2000".