Whats better,grinding a crank or line boring?

Sounds like a plan. At least that way if I decide I want to go even faster the bottom end will hold up. I've been having second thoughts about using the stock steelie crank ever since I picked up these stage vi heads. One look at the max wedge ports had me thinking real hard,lol....

Brandons moper? K1 John? Where to get.....