Will the Cardas xlrs still work, that was mentioned earlier that Trung ID'd or are they out now?
If you refer to the particular Cardas which I think you refer to, negative. Examine the two drawings to confirm. Might be nice to post a link to both drawings so readers can confirm.
I'm a stickler for matched metal contacts, which IIRC George Merrill told me long ago they tested and found mis-matched contacts to be highly undesirable. I'm always open to changing my mind. But this guy's been doing this for about 50 years. So I'm highly suggesting readers consider matched metal contact composition rather than simple: "This is better build/composition so that trumps matching contact materials."
Let's put it this way. You have a stock like-new OEM Volkswagen Beetle first generation sold in the USA, whenever that was, including new stock OEM tires. You do a slalom course at maximum speed of, say, 49.0mph. You make minimum modification for the exact same car to accept modern F1 road race slicks. Rather than attain a higher speed through the same slalom course, at the first cone the slicks grip the pavement like two interlocked gears, transferring about 1000x more energy into the suspension that it was designed for, causing said suspension to rip apart and disintegrate as if hit by an Iraq IED, the car flips and engulfs in immediate flame, something such vintage Beetle did in normal use with more frequency than the average vehicle of similar vintage.
Which tire/wheel assembly above is "better" on an absolute scale? Which tire/wheel assembly above was "better" in that example?