Need specs on RV8 header

["Michael Hartwig" <mhartwig@cbu.edu>]

I was wondering if someone could give me the following info on the RV8
headers:
1. Diameter of the tubing used
2. Diameter and length of the collector.  I assume     they are 4 - 1 design
3. Overall length of the header
4. How close are the tubes to equal length

Thanks
Mike