URGENT!!! PLEASE HELP!!!

I posted this in Windsor Power but no one seemed to know or respond. I have a '69 Mustang with a 351W/C4/8" 3.00:1 open combo. I ordered a new 9" Currie rear end 2 weeks ago. 31 spline heavy duty axles and housings, Traction-Lok center section with 3.70s. My question: will my stock driveshaft with my current 8" rear end fit right up with the new 9" rear end? Or what will I have to do/purchase to make this work out? I DO NOT want to buy a new d/s. I am 90% sure my junk yard does not have one that would work either. Please help! My new heavy duty leaf springs arrived today and the rear end will be here any day! Thanks in advance.

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'69 Coupe with 351W
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Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Edelbrock lifters, Edelbrock double roller timing chain, Edelbrock valve springs, Accel coil, Moroso Blue-Max wires, Hedman headers, 2 1/2" pipe, glasspacks, Flex fan, Lakewood traction bars, C4, 9" Currie on order, 290hp-stock heads
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The Surgeon General didn't say anything about smoking your azz!!