I have a friend who is interested in doing an all motor built, b-series vtec with big bore and big cams, ect. ect. Neither of us are actually too knowledged about b-series internals. He is interested in boring the motor out to the 2.1-2.2 liter range.

Which bottom end would be best for the bore? I've heard that the b20 is almost at the end of it's leash being a 2.0 but I wouldn't be surprised if the information was correct.

Thanks.