330

[catch me if u can]

if you buy a 330 bolt on dont you lose 2 bores because you get 4 on a 330 when you machine the cases right

[siderbox]

Not sure how many you loose. You only get one bore.
With that said I ran mine for over 6 years before taking it down. Measured everything out and ended up putting a new std bore piston back in. I don't run mine that often, but when I do I run it damn hard. I have a over bore piston setting waiting when I need it. Who knows when that will be.