the yokes on me

went to install my 4:30 gears last night and of course I have yoke problems

the yoke I have is the 7260 -29 spline - 2.125 cross ID and the one I need is the 7260 - 10 spline-2.125 cross ID

never bought one before so need to know who carries them ? does mopar ? is it usually an in stock item or special order? any idea on cost?
I need one yesterday! and of course its a holiday weekend