I am getting ready to swap a 14 bolt into my 75 K5. The 14 bolt came out of a 3/4 ton late 70's or early 80's truck with a NP208. I have a 203 t-case in the K5. Couple questions..... #1 Will I able to fit the 3/4 ton driveline to the 203 or will I have to change the yoke on the driveline or t-case? #2 Can you take the yoke off the 203 and put a 208 yoke on it so the u- joints will be the same? I am guessing that the deciding factor would be output shaft spines?