Had a chance to test out my new to me, Gibson TB+ pickups, lots of hogging out a piece of ply i had installed in the original epi neck pickup cavity. & the size difference it's something between pickups.
View attachment 7495536
Where i do assume the alnico 5 bar magnets are the blades for the 60's pickup on the right, the modern's ceramic magnet sits beneath the coils (which are less in width than the shell). Nonetheless, the modern cover is also a lil wide/long to accept the rings i had around the 60s. So out with the 60's/70's look, & back to the post 87-88 birds. Sound wise, the Modern TB+ are still clear enough for pick attack & grind, but they have more growl, where i'd categorize the 60's versions as piano like, with a grind/bite. My 60's RI pickups are 8.3-8.5k range, where the Modern TB + are 9.6-9.7k. Both have a very stark contrast to the former Epiphone Deep sixx pickups which were 12 & 17k (super dark, overall).
Anyway, while i'm happy with the modern TB+, & my Epi bird will have a new 3pc hard maple body built for it (with some slight tweaks), i'll test both sets, & decide when its built which, will reside in it for good. & with that, also means another Thunderbird build for me to use the other set. I'm 90% sure the new maple body build will sport the modern TB+, which leave the 60's RI to use in the full ground build.
You need both Vintage & Modern Thunderbirds under one roof, however my vintage build would perhaps bridge elements from both the 60's & 70's Birds. I'm sticking to the reverse shape overall on both, the vintage build will look more like the 70's versions & the pickups wired in series as they were in the 70's.
& i won't lie, once the moderns were in my bird, in my head that's the thunderbird tone i know most. The 60's sound great too, just different, & until i ever play a real vintage 60's bird, i'll be content with the vintage build i'll have overall to fill that void xD.