I was definitely not trying to recommend a stock Air Classic Neck, and I can’t corroborate my belief about recreating the original DP103 by un-airing an Air Classic. I’m sorry for not checking into this before posting.
I really don’t have too much to offer in the way of recommendations of a DiMarzio pickup that sounds like a PAF. Aside from the 36th, PAF 59 and PAF Master I don’t really think DiMarzio pickups sound like P.A.F. pickups. As much as I like the 36th, I consider it somewhat of a stretch. Virtual Vintage tech and non-nickel silver backplates are not part of the formula. An inconsistent number of turns on each bobbin resulting in an unbalance is part of the equation provided it is of the same gauge wire.
I like my PAF Pro in the neck position but I don’t think it sounds like a Duncan Seth Lover or a Gibson Burstbucker.
That out of the way I think DiMarzio makes excellent neck pickups. Unfortunately most of the ones I like are too powerful for the bridge pickups that I like.
Anyway, besides the PAF Pro I would check out the DiMarzio’s hottest vintage output pickups, which include bridge pickups such as the 36th and PAF Master. The latter, according to the specs, does not have an overwhelming amount of bass which is characteristic of a pickup with an A4 magnet.
I would also consider the Duncan Whole Lotta Humbucker or Saturday Night Special. The Screamin’ Demon also makes for an excellent neck pickup that I believe would pair nicely with a Super D.
https://youtu.be/xfbrlale9j8