From the 1999 rule book:
"...Minimum weight is 3000 pounds including driver. Power adder equipped vehicles over 310ci, but less than 360ci, add 200 pounds. Non power adder equipped vehicles minimum weight 2800 ounds, maximum ci displacement 450ci..."
Your best bet on having the question completely answered is to contact George Klass. You can find his email under the MW Contact Us section or reach him at Coast High Performance.
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Jeff Chambers
T/S #4
12.53 Seconds/109.3 MPH
http://www.kellnet.com/chambers/default.htm