Wow, I was there and didn't know why they were called a T-top. I'm sure there are lots of them laying around. I gave my guitar tech a gold plated pair out of a Les Paul Custom that I had put SD's in.
It's sort of funny, that Seymour Duncan and DiMarzio both sort of got started by bashing the stock '70's Gibson pickups as not sounding as good or having as much output as the '50's pickups due to smaller magnets and different wire. That is when aftermarked PAF/'59 pickups took hold, to get that old Les Paul sound like Clapton, Page, Beck, etc. The JB's, Customs Distortions, etc. were to make up for the lack of output of the stock Gibsons. Since amps didn't have master volumes at the time, a hotter pickup was the answer. They didn't contribute noise like the BOOSTERS of the day and had a fatter/bigger tone.
Thanks to SD and DM, sharing info, we all know way more about pickups now than we did in the '70's. I still think the T-top has sort of a whiny tone compared to aftermarket pickups, but I'm sure some folks will like it. I wouldn't trade it for a Full Shred or Pearly Gates. IMHO