Rigid forks on a suspension correct frame

[Spencer]

I've just purchased a 03 Yeti Fro frame, the geometery is suspension correct to suit a 80mm travel fork.

What axle to crown rigid forks would suit 400mm 420mm or 440mm?

Thanks in advance

 

[JamesM]

I think around 425mm to 430mm is the norm for an 80mm corrected frame. For reference 20mm difference in A-C makes around 1 degree difference in the headtube angle.