As someone who had the same feeling towards my CIJ Jaguar HH, I can help here. 😁
While I think the Dragsters are fine as humbuckers, they suck in a Jaguar. They sound like low output, generic humbuckers. You get a *tiny* bit of character coming through them, but they basically kill the Jaguar tone.
I posted here with this issue months ago. I wanted single coils in my Jag, but crap kept coming up and taking away my mod budget.
A few weeks ago, everything fell into place. I found a set of CIJ Jaguar pickups, a CIJ pickguard (despite what was said early on in this thread, a standard CIJ pickguard WILL fit perfectly), as well as a Bigsby B5 in a matter of a day or two.
I also ordered a set of Jaguar pickup covers, and the correct knobs from guitar parts resource, and a Vibramate to mount the Bigsby without drill holes.
Everything fell into place further by arriving on the same day. That night, I put everything together, and here's the end result;

The Jaguar pickups (CIJ's) sound great, and did EXACTLY what I wanted. It sounds like a Jaguar now. We can argue that the trem type makes a huge difference, or that the wiring isn't spot on all day and night, but the fact is that this thing sounds just like a Jaguar should.
Some things to keep in mind, however, are;
-The humbucker routs are too deep to accommodate the Jaguar pickup screws. Use a spacer of some sort, and the same screws that the humbuckers are attached to the pickup rings with. I used some thick, black cardboard strips cut to fit the routs, and it worked great.
-Traditional Jaguar pickguards have one extra screw hole when compared to the HH guard. This extra screw hole is almost directly over the neck humbucker's excessively large rout - a dummy screw or screw head could just be glued in, or possibly wedged in. Other than this, a CIJ Jaguar pickguard should fit perfectly.
-If cash is tight, skip the pickup claws. Yeah, they're cool as hell, but it's debatable if they do much to the tone, and they're pricey ($10-$12 USD. Each.) I skipped them, thinking I could grab a pair in between string changes for cheap used.
If you have any questions, feel free to ask. I certainly researched the project long enough. 🙄