I have drilled the stubs more than once....Use a 3/8 bit....Anything smaller will likely break off before it gets completely through the stub....Take a good stiff rod and whack the other side out,then take a rod larger than the 3/8 hole,I used a 3/4 and knock out the stub you drilled...FYI,I drilled out the side where the brake rotor is....The tranny seal on the other side tends to fail more often,and by drilling out the other side,the axle on the failing seal side can be removed without having to take out the other one.....
After drilling,get a set screw that can be tapped into the 3/8 hole and plug it up....Use a little blue loctite on it to be assured it doesn't back out and trash your cv's....
I have looked in the past,but had no luck finding another cup that would work...You can get cv rebuild kits,but the cup isn't included...The last time I checked,you could still get axles from Honda,but they are $$$$$ Close to $500 a side......
Hoodlum