There's a huge difference in hone jobs for sure. Most of the straight, correct RA jobs are diamond head. The movement in the bores just is what it is. My nitrous KBs start moving noticeably around 1500hp. Thats with warren Johnson, or Kurt hone job. Some have been higher, and every block is a little different. I have a roots blown one that made over 1600on the dyno at 10 over. I've been at 30 over, detonated it, smoked and some pistons. Pulled the head, cleaned the aluminum off the bores, and the thing is still less than a thou out of round. Dingle honed it, slapped in new slugs, put the tune back and go cat go.

I'm getting a billet next, but I'll be filling all my kbs to the water port to see if it helps in the future. All my junk is race only so who cares.