[Roadsters] Cam option?

[Tom PRATHER]

Hello list,
   
     I am now about finished with my U20 to MC Mikuni flatslide conversion and now looking to upgrade the cam. With my A cam at present I hit the wall @ 6k. I have never had the chance to drive a B cam car. What am I to expect with a B cam if I go that route? Little sacrifice in the low end punch and perhaps rev a bit higher than 6k? Rallye puts it as just that,do you agree? I don't want to give up much on the low end as I have 4 big holes to overcome rather than 2 now but would like to wake it up a little on top end but not give up my midrange. Suggestions?
                          Thanks, U20, Smoothbore 40mm Mikuni Flatslides