Diveshaft queston.

[Chevy 350 Fan]

Hi guys im going to be a senior in high school. im rebuilding my 72 GMC C20 after it damn near burned to the ground in march . So it is nearing time to put in the motor and trans. Im going to be running a 450HP Corvette motor. this beast was built in a race shop in texas. it a 350 not stroked, its running like 11:1 compression. The trans ive decided im just going to reuse the 350 that I had rebuilt shortly before the fire (nice right). Now that was hooked to the original 350. Im at the point that if I blow the trans oh well . But anyways back to my question: will the original drive shaft handle that kind of power or will I twist and/ or break it?