For some interesting application of log style manifolds they are quite a force.

http://www.youtube.com/watch?v=VNuiDE ... re=player_embedded#at=443

Just on 6.35 seconds stop the vid for a glimpse of the turbo manifold Pagani Zonda use for max throttle response. Honda peeps turboing for some years now have been choosing smaller compact log style manifolds. Saab Turbo 4s in the 90s had 85-90 per cent of torque available from 1750rpm. Logs with the right snail and inlet make as little lag as possible now to get the rest of the ti exhaust from the pagani zonda factory :) not to mention the leather!.