1973-78 chevy np203 to a front dana 44 with a TH350 came out of 1977 k5 blazer. measurement is from the flat flange on the u-joint to the center of the u-joint colasaped  28" and extended out 30 3/4".  slip yoke has some slop u-joint seem good in the C.V . please check your length if your unsure.

measure your truck or use in a retrofit application.

THERE A BOLT AT THE CV END THAT BROKE OFF IN THE THREADS AS POINTED OUT. MISSING THE CAPS FOR THE U-JOINT AT THE AXLE END. SEE PICS NEEDS WORK!!!!!!!!!!!!!!!!!!!!!!!