alot of guys grind to fit
Ain't no amount of grinding gonna fit a Comp 9000 to a tunnel on anything, no way shape or form.......unless you cut halfway through the first two tunnels on a BBF, the last two on a BBC.....

Best bet, is a Mallory Marine YL electronic series or Mechanical Unilite if you're dead set against marine ratings for whatever reason. The plugs are the same as your Comp 9000, so should be a drop in, painless deal.

Ray