I am buying a 77 3/4 ton truck for the drivetrain to put in my 79 blazer (only 1 more $100 payment and it's mine). The truck has the sm465/205 combo and a 14bff rear with gov loc. He ran it with a lift and it has an extended front driveshaft /forums/images/graemlins/thumb.gif. I was hoping to use the 3/4 ton rear driveshaft and just shorten it rather than conversion u joints on the 1/2 ton driveshaft. I looked under the truck and it has a 2 piece rear driveshaft with a carrier bearing. Is there a way for me to make this shaft work on my 79 K5?