Here's the answer I got from multiple sources at NHRA Technical:
"If you show up with them on a Stocker, you'll be bounced because we know the ports are over the c.c. limit. If we check them and they come up correct, you'll be bounced because we know you've welded them."
I asked why they were still shown as a replacement head for Stock and only one person gave me an answer: "They shouldn't be."
Catch 22.....
