I have a Stage 3 YB over here in California,
I have tried all the recommended plugs, but found either they don't work well at high boost, 15psi plus, or work well for a short time, like 3,000 or so miles then need re-gapping or are toasted.
I found the Autolite equivalent of the 071's and it works just as good, but is nickel plated and has a solid electrode, so no losing the tip in the boot.
They are Autolite AR3932, AR3933 etc.
There is even a better version made for racing that lasts much longer and never needs re-gapping AR3932X, look them up on eBay, I have a set currently with 15k miles and still working like a new set of 071's

Ps. The Autolite's are much less expensive and made to a better quality level, I have had not one bad plug yet!