M_Boats: M-17 Jib dimensions

I am planning on replacing the working jib for my M-17 this next year. None of the info. I have for my boat gives the dimensions. Does anyone out there in M-land have the dimensions handy? Also, I was told by the previous owner that a Cal. 20 jib works well on an M-17, does anyone have any experience to confirm this? Regards...Arnold Sharpe, M-17 hull #265, "LITTLE BREEZE"