Type 1's rock! They do a raw thing that most other pickups just don't. They're like the anti-bart ... Nordstrand stuff is damned good. I have Big Split's in a 55-01, used their Alnico MM & J replacements in a 44-02 - great just great - but not quite the same thing as the Aero.
My current fav J pickup is the JBX-4 from Pete Biltoft at Vintage Vibe Guitars.
One real advantage to Pete is that you can actually talk to the guy, describe what you like, don't like and that's what he builds ya. Want a little extra warmth, laid back highs, big punch ... just say the words ... his attention to detail, particularly in shielding is phenomenal.
Now this is windy sailing season in Hood River and Pete's a windsurfer guy so ... you might have to wait for that call. Better to call early in the day before the wind get's up... emailing him is better yet.
http://vintagvibeguitars.com