Spacecowboy
The carb will work either way, You can also have it so the carb sits inline with the motor not at a 90deg. Some feel there is very little difference. If you do not have a cable settup. I have something that will help you mount it 90deg. on the intake.
http://www.homestead.com/memorylaners/MLRS.html Take a look at these pictures I have other Not yet posted I can send them to you.
Hope this helps. }[oooooo]
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NovaMan/Twisted6/Larry