I already provided a spreadsheet for you...
"rimchart" tab under "Mavic < 2002" section has an ERD for the clincher model (603.8) that I measured...go ahead and round it up to 604.00 - plug into spoke length calculator.
288, 288, 286 for 3 cross 36h on Record High Flange Front and 126mm Rear.
Short of measuring yourself, you have all the information you need...
=8-)
__________________
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life