I had the Chubby 518's on there for a long time.
I was having issues with my wrist. I needed to get rid of those rototiller bars.I wanted something as close as poosible with the minimum amnt of turn back. The stock Deluxe bars were just too close and turn back somewhat.
I'm happy with the 503's. I ran the Deluxe risers for a few months, but was stretching slightly, so I waited til I got a deal on ebay on the Chubby 527 risers.

But, like I said. All said n done, the orig style Dyna Wide Glide mini apes
were the best. But thin, non chrome and you can't really internal wire em.
Plus, I ain't changin bars again. I'll push that thing off a cliff 1st.

 

Thanks jimmer1817, I measured my stock Heritage brake line and came up with 38 3/4 inches. Appears pretty close to your Deluxe brake line. Maybe I'll be able to use my stock lines with this swap?