Yes Barnett make good clutch plates, but the recluse set up is even better. Rivera Primo also makes some nice set ups as well that I have been very happy with in the past. But I would go recluse if I were you, that is what is going in mine when the time comes.
Yes I have ran a Barnett clutch and spring conversion on a 150hp nitrous Road Star warrior( I know its not a Harley) but 2 up with spray and it never slipped once. I am going to put a set in the glide when the stock set give out.