Need SYE help quick!

I've got the RE SYE on order and trying to have my machine shop put my driveshaft together. Does anyone know which Double Cardan assembly to order? Is there a spicer part number or anything? Or maybe dimensions of the bolt circle and flange? I'd really love to see this all together for some Christmas wheeling. Please help!

Although I would still recommend installing it before having driveshaft made,the flange is a std Spicer 1310.I know they make 2 different sizes for the 1350,I believe there is only one for the 1310!